updated all files again, placing current RDATEs first, so Outlook uses

2001-10-22 Damon Chaplin <damon@ximian.com> * zoneinfo/*: updated all files again, placing current RDATEs first, so Outlook uses those. Also fixed a few bugs in vzic which resulted in a few changes. * zoneinfo/Makefile.am (DIRS): added America/North_Dakota. 2001-10-22 Damon Chaplin <damon@ximian.com> * src/libical/icaltimezone.c (icaltimezone_get_utc_offset): (icaltimezone_get_utc_offset_of_utc_time): if we go off the start of the changes array, return the TZOFFSETFROM of the first change. Also changed the maximum year to 2037. * src/libical/icaltime.c (icaltime_day_of_week): (icaltime_start_doy_of_week): (icaltime_week_number): init tm_hour to 12. Sometimes mktime() adjusts the time, if that local time doesn't actually exist, leading to the wrong day being returned. It is unlikely to adjust by 12 hours. (icaltime_as_timet_with_zone): (icaltime_from_timet_with_zone): change it back so it does convert DATE values to/from the timezone. time_t values don't really go well with DATE values, so be very careful when using them. We now assume that the time_t points to the start of the day in the given timezone. (We used to assume it pointed to the start of the day in UTC, but that meant it was actually incorrect wrt the displayed calendar.) * src/libical/icalrecur.c (expand_year_days): for FREQ=YEARLY with no modifiers, we add one day, using the month and day from DTSTART. (next_year): make sure we never go past 2037. * scripts/mkderivedproperties.pl: Updated to allow DTSTART, DTEND, DUE and RECURRENCE-ID to be set with DATE values. I think it now handles all properties which can take DATE values, except RDATE which uses DATE-TIME-PERIOD. svn path=/trunk/; revision=13912
author: Damon Chaplin <damon@ximian.com> 2001-10-23 07:40:29 +0800
committer: Damon Chaplin <damon@src.gnome.org> 2001-10-23 07:40:29 +0800
commit: 1da29bab5d909484d332cf2777da92def62023a6 (patch)
tree: 9aa683dc3cf6cbbf712ab76fe46a633d1f581e75 /libical/zoneinfo/America
parent: 4807a4d7e75993aefc6860d2747403a7019c49e7 (diff)
download: gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar
gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.gz
gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.bz2
gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.lz
gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.xz
gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.zst
gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.zip
108 files changed, 5753 insertions, 5729 deletions
diff --git a/libical/zoneinfo/America/Adak.ics b/libical/zoneinfo/America/Adak.ics
index 3ed7ea9a3b..7e9652438a 100644
--- a/libical/zoneinfo/America/Adak.ics
+++ b/libical/zoneinfo/America/Adak.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Adak
+TZID:/softwarestudio.org/Olson_20011022_4/America/Adak
 X-LIC-LOCATION:America/Adak
 BEGIN:STANDARD
 TZOFFSETFROM:-0900
@@ -18,42 +18,79 @@ TZNAME:HADT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-1000
+TZOFFSETTO:-0900
+TZNAME:HADT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:+1213
-TZOFFSETTO:-1147
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
+TZOFFSETFROM:-1000
+TZOFFSETTO:-1000
+TZNAME:HAST
+DTSTART:19831030T020000
+RDATE:19831030T020000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-1100
+TZOFFSETTO:-1000
+TZNAME:BDT
+DTSTART:19830424T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-1000
+TZOFFSETTO:-1100
+TZNAME:BST
+DTSTART:19821031T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-1147
+TZOFFSETFROM:-1100
 TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19000820T120000
-RDATE:19000820T120000
+TZNAME:BST
+DTSTART:19690101T000000
+RDATE:19690101T000000
+RDATE:19670401T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-1100
 TZOFFSETTO:-1100
 TZNAME:NST
-DTSTART:19420101T000000
-RDATE:19420101T000000
+DTSTART:19460101T000000
 RDATE:19460101T000000
+RDATE:19420101T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1000
-TZNAME:NWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1000
-TZNAME:NPT
-DTSTART:19450814T130000
-RDATE:19450814T130000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-1000
 TZOFFSETTO:-1100
@@ -61,70 +98,33 @@ TZNAME:NST
 DTSTART:19450930T020000
 RDATE:19450930T020000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19670401T000000
-RDATE:19670401T000000
-RDATE:19690101T000000
-END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-1000
+TZOFFSETTO:-1000
+TZNAME:NPT
+DTSTART:19450814T130000
+RDATE:19450814T130000
+END:DAYLIGHT
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-1100
 TZOFFSETTO:-1000
-TZNAME:BDT
-DTSTART:19690427T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
+TZNAME:NWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-1000
+TZOFFSETFROM:-1147
 TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19691026T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
+TZNAME:NST
+DTSTART:19000820T120000
+RDATE:19000820T120000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1000
-TZNAME:HAST
-DTSTART:19831030T020000
-RDATE:19831030T020000
+TZOFFSETFROM:+1213
+TZOFFSETTO:-1147
+TZNAME:LMT
+DTSTART:18671018T000000
+RDATE:18671018T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1000
-TZOFFSETTO:-0900
-TZNAME:HADT
-DTSTART:19840429T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Anchorage.ics b/libical/zoneinfo/America/Anchorage.ics
index 989da1e8e7..b48895984b 100644
--- a/libical/zoneinfo/America/Anchorage.ics
+++ b/libical/zoneinfo/America/Anchorage.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Anchorage
+TZID:/softwarestudio.org/Olson_20011022_4/America/Anchorage
 X-LIC-LOCATION:America/Anchorage
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
@@ -18,107 +18,107 @@ TZNAME:AKDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0900
+TZOFFSETTO:-0800
+TZNAME:AKDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:+1400
-TZOFFSETTO:-1000
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1000
-TZNAME:CAT
-DTSTART:19000820T120000
-RDATE:19000820T120000
-RDATE:19420101T000000
-RDATE:19460101T000000
+TZOFFSETFROM:-0900
+TZOFFSETTO:-0900
+TZNAME:AKST
+DTSTART:19831030T020000
+RDATE:19831030T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-1000
 TZOFFSETTO:-0900
-TZNAME:CAWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0900
-TZNAME:CAWT
-DTSTART:19450814T140000
-RDATE:19450814T140000
+TZNAME:AHDT
+DTSTART:19830424T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0900
 TZOFFSETTO:-1000
-TZNAME:CAT
-DTSTART:19450930T020000
-RDATE:19450930T020000
+TZNAME:AHST
+DTSTART:19821031T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-1000
 TZOFFSETTO:-1000
 TZNAME:AHST
-DTSTART:19670401T000000
-RDATE:19670401T000000
+DTSTART:19690101T000000
 RDATE:19690101T000000
+RDATE:19670401T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1000
-TZOFFSETTO:-0900
-TZNAME:AHDT
-DTSTART:19690427T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0900
+TZOFFSETFROM:-1000
 TZOFFSETTO:-1000
-TZNAME:AHST
-DTSTART:19691026T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
+TZNAME:CAT
+DTSTART:19460101T000000
+RDATE:19460101T000000
+RDATE:19420101T000000
+RDATE:19000820T120000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0900
-TZOFFSETTO:-0900
-TZNAME:AKST
-DTSTART:19831030T020000
-RDATE:19831030T020000
+TZOFFSETTO:-1000
+TZNAME:CAT
+DTSTART:19450930T020000
+RDATE:19450930T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:AKDT
-DTSTART:19840429T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
+TZOFFSETTO:-0900
+TZNAME:CAWT
+DTSTART:19450814T140000
+RDATE:19450814T140000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-1000
+TZOFFSETTO:-0900
+TZNAME:CAWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:+1400
+TZOFFSETTO:-1000
+TZNAME:LMT
+DTSTART:18671018T000000
+RDATE:18671018T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Antigua.ics b/libical/zoneinfo/America/Antigua.ics
index 95117eae2c..418684de9d 100644
--- a/libical/zoneinfo/America/Antigua.ics
+++ b/libical/zoneinfo/America/Antigua.ics
@@ -2,21 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Antigua
+TZID:/softwarestudio.org/Olson_20011022_4/America/Antigua
 X-LIC-LOCATION:America/Antigua
 BEGIN:STANDARD
-TZOFFSETFROM:-0407
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19120302T000000
-RDATE:19120302T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:AST
 DTSTART:19510101T000000
 RDATE:19510101T000000
 END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0407
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19120302T000000
+RDATE:19120302T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Araguaina.ics b/libical/zoneinfo/America/Araguaina.ics
index 3095450b15..3b65bf9912 100644
--- a/libical/zoneinfo/America/Araguaina.ics
+++ b/libical/zoneinfo/America/Araguaina.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Araguaina
+TZID:/softwarestudio.org/Olson_20011022_4/America/Araguaina
 X-LIC-LOCATION:America/Araguaina
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
@@ -19,73 +19,73 @@ DTSTART:20010218T000000
 RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0313
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:20000227T000000
+RDATE:20000227T000000
+RDATE:19990221T000000
+RDATE:19980301T000000
+RDATE:19970216T000000
+RDATE:19960211T000000
+RDATE:19900211T000000
+RDATE:19890129T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881016T000000
-RDATE:19891015T000000
-RDATE:19951015T000000
-RDATE:19961006T000000
-RDATE:19971006T000000
-RDATE:19981011T000000
+DTSTART:19991003T000000
 RDATE:19991003T000000
+RDATE:19981011T000000
+RDATE:19971006T000000
+RDATE:19961006T000000
+RDATE:19951015T000000
+RDATE:19891015T000000
+RDATE:19881016T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
-RDATE:19890129T000000
-RDATE:19900211T000000
-RDATE:19960211T000000
-RDATE:19970216T000000
-RDATE:19980301T000000
-RDATE:19990221T000000
-RDATE:20000227T000000
+DTSTART:19950914T000000
+RDATE:19950914T000000
+RDATE:19900917T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0313
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19900917T000000
-RDATE:19900917T000000
-RDATE:19950914T000000
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Aruba.ics b/libical/zoneinfo/America/Aruba.ics
index 41737ca441..65d5ef19f5 100644
--- a/libical/zoneinfo/America/Aruba.ics
+++ b/libical/zoneinfo/America/Aruba.ics
@@ -2,21 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Aruba
+TZID:/softwarestudio.org/Olson_20011022_4/America/Aruba
 X-LIC-LOCATION:America/Aruba
 BEGIN:STANDARD
-TZOFFSETFROM:-0440
-TZOFFSETTO:-0430
-TZNAME:ANT
-DTSTART:19120212T000000
-RDATE:19120212T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0430
 TZOFFSETTO:-0400
 TZNAME:AST
 DTSTART:19650101T000000
 RDATE:19650101T000000
 END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0440
+TZOFFSETTO:-0430
+TZNAME:ANT
+DTSTART:19120212T000000
+RDATE:19120212T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Asuncion.ics b/libical/zoneinfo/America/Asuncion.ics
index ecad36209b..486e7de9cb 100644
--- a/libical/zoneinfo/America/Asuncion.ics
+++ b/libical/zoneinfo/America/Asuncion.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Asuncion
+TZID:/softwarestudio.org/Olson_20011022_4/America/Asuncion
 X-LIC-LOCATION:America/Asuncion
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
@@ -19,18 +19,67 @@ DTSTART:19980301T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0351
-TZOFFSETTO:-0351
-TZNAME:AMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0400
+TZNAME:PYT
+DTSTART:19970223T000000
+RDATE:19970223T000000
+RDATE:19960301T000000
+RDATE:19950226T000000
+RDATE:19940227T000000
+RDATE:19930331T000000
+RDATE:19920301T000000
+RDATE:19910401T000000
+RDATE:19900401T000000
+RDATE:19890401T000000
+RDATE:19880401T000000
+RDATE:19870401T000000
+RDATE:19860401T000000
+RDATE:19850401T000000
+RDATE:19840401T000000
+RDATE:19830401T000000
+RDATE:19820401T000000
+RDATE:19810401T000000
+RDATE:19800401T000000
+RDATE:19790401T000000
+RDATE:19780301T000000
+RDATE:19770301T000000
+RDATE:19760301T000000
+RDATE:19740401T000000
 END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0300
+TZNAME:PYST
+DTSTART:19951001T000000
+RDATE:19951001T000000
+RDATE:19941001T000000
+RDATE:19931001T000000
+RDATE:19921005T000000
+RDATE:19911006T000000
+RDATE:19901001T000000
+RDATE:19891022T000000
+RDATE:19881001T000000
+RDATE:19871001T000000
+RDATE:19861001T000000
+RDATE:19851001T000000
+RDATE:19841001T000000
+RDATE:19831001T000000
+RDATE:19821001T000000
+RDATE:19811001T000000
+RDATE:19801001T000000
+RDATE:19791001T000000
+RDATE:19781001T000000
+RDATE:19771001T000000
+RDATE:19761001T000000
+RDATE:19751001T000000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0351
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:PYT
-DTSTART:19311010T000000
-RDATE:19311010T000000
+DTSTART:19750301T000000
+RDATE:19750301T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -40,67 +89,18 @@ DTSTART:19721001T000000
 RDATE:19721001T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0351
 TZOFFSETTO:-0400
 TZNAME:PYT
-DTSTART:19740401T000000
-RDATE:19740401T000000
-RDATE:19760301T000000
-RDATE:19770301T000000
-RDATE:19780301T000000
-RDATE:19790401T000000
-RDATE:19800401T000000
-RDATE:19810401T000000
-RDATE:19820401T000000
-RDATE:19830401T000000
-RDATE:19840401T000000
-RDATE:19850401T000000
-RDATE:19860401T000000
-RDATE:19870401T000000
-RDATE:19880401T000000
-RDATE:19890401T000000
-RDATE:19900401T000000
-RDATE:19910401T000000
-RDATE:19920301T000000
-RDATE:19930331T000000
-RDATE:19940227T000000
-RDATE:19950226T000000
-RDATE:19960301T000000
-RDATE:19970223T000000
+DTSTART:19311010T000000
+RDATE:19311010T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:PYT
-DTSTART:19750301T000000
-RDATE:19750301T000000
+TZOFFSETFROM:-0351
+TZOFFSETTO:-0351
+TZNAME:AMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:PYST
-DTSTART:19751001T000000
-RDATE:19751001T000000
-RDATE:19761001T000000
-RDATE:19771001T000000
-RDATE:19781001T000000
-RDATE:19791001T000000
-RDATE:19801001T000000
-RDATE:19811001T000000
-RDATE:19821001T000000
-RDATE:19831001T000000
-RDATE:19841001T000000
-RDATE:19851001T000000
-RDATE:19861001T000000
-RDATE:19871001T000000
-RDATE:19881001T000000
-RDATE:19891022T000000
-RDATE:19901001T000000
-RDATE:19911006T000000
-RDATE:19921005T000000
-RDATE:19931001T000000
-RDATE:19941001T000000
-RDATE:19951001T000000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Barbados.ics b/libical/zoneinfo/America/Barbados.ics
index 1b0883f7af..94e20868a7 100644
--- a/libical/zoneinfo/America/Barbados.ics
+++ b/libical/zoneinfo/America/Barbados.ics
@@ -2,41 +2,41 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Barbados
+TZID:/softwarestudio.org/Olson_20011022_4/America/Barbados
 X-LIC-LOCATION:America/Barbados
 BEGIN:STANDARD
-TZOFFSETFROM:-0358
-TZOFFSETTO:-0358
-TZNAME:BMT
-DTSTART:19240101T000000
-RDATE:19240101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0358
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19320101T000000
-RDATE:19320101T000000
+DTSTART:19800925T020000
+RDATE:19800925T020000
+RDATE:19790930T020000
+RDATE:19781001T020000
+RDATE:19771002T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ADT
-DTSTART:19770612T020000
-RDATE:19770612T020000
-RDATE:19780416T020000
-RDATE:19790415T020000
+DTSTART:19800420T020000
 RDATE:19800420T020000
+RDATE:19790415T020000
+RDATE:19780416T020000
+RDATE:19770612T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0358
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19771002T020000
-RDATE:19771002T020000
-RDATE:19781001T020000
-RDATE:19790930T020000
-RDATE:19800925T020000
+DTSTART:19320101T000000
+RDATE:19320101T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0358
+TZOFFSETTO:-0358
+TZNAME:BMT
+DTSTART:19240101T000000
+RDATE:19240101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Belem.ics b/libical/zoneinfo/America/Belem.ics
index 73ad3d6924..d8402a2b94 100644
--- a/libical/zoneinfo/America/Belem.ics
+++ b/libical/zoneinfo/America/Belem.ics
@@ -2,61 +2,61 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Belem
+TZID:/softwarestudio.org/Olson_20011022_4/America/Belem
 X-LIC-LOCATION:America/Belem
 BEGIN:STANDARD
-TZOFFSETFROM:-0314
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19880912T000000
+RDATE:19880912T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:BRST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
+DTSTART:19880207T000000
 RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
+TZOFFSETTO:-0200
+TZNAME:BRST
+DTSTART:19871025T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0314
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19880912T000000
-RDATE:19880912T000000
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Belize.ics b/libical/zoneinfo/America/Belize.ics
index 7533b1b0d6..d18b445d9a 100644
--- a/libical/zoneinfo/America/Belize.ics
+++ b/libical/zoneinfo/America/Belize.ics
@@ -2,92 +2,92 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Belize
+TZID:/softwarestudio.org/Olson_20011022_4/America/Belize
 X-LIC-LOCATION:America/Belize
 BEGIN:STANDARD
-TZOFFSETFROM:-0553
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19120401T000000
-RDATE:19120401T000000
+DTSTART:19830212T000000
+RDATE:19830212T000000
+RDATE:19740209T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0530
-TZNAME:CHDT
-DTSTART:19181006T000000
-RDATE:19181006T000000
-RDATE:19191005T000000
-RDATE:19201003T000000
-RDATE:19211002T000000
-RDATE:19221008T000000
-RDATE:19231007T000000
-RDATE:19241005T000000
-RDATE:19251004T000000
-RDATE:19261003T000000
-RDATE:19271002T000000
-RDATE:19281007T000000
-RDATE:19291006T000000
-RDATE:19301005T000000
-RDATE:19311004T000000
-RDATE:19321002T000000
-RDATE:19331008T000000
-RDATE:19341007T000000
-RDATE:19351006T000000
-RDATE:19361004T000000
-RDATE:19371003T000000
-RDATE:19381002T000000
-RDATE:19391008T000000
-RDATE:19401006T000000
-RDATE:19411005T000000
-RDATE:19421004T000000
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:19821218T000000
+RDATE:19821218T000000
+RDATE:19731205T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0530
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19190209T000000
-RDATE:19190209T000000
-RDATE:19200215T000000
-RDATE:19210213T000000
-RDATE:19220212T000000
-RDATE:19230211T000000
-RDATE:19240210T000000
-RDATE:19250215T000000
-RDATE:19260214T000000
-RDATE:19270213T000000
-RDATE:19280212T000000
-RDATE:19290210T000000
-RDATE:19300209T000000
-RDATE:19310215T000000
-RDATE:19320214T000000
-RDATE:19330212T000000
-RDATE:19340211T000000
-RDATE:19350210T000000
-RDATE:19360209T000000
-RDATE:19370214T000000
-RDATE:19380213T000000
-RDATE:19390212T000000
-RDATE:19400211T000000
-RDATE:19410209T000000
-RDATE:19420215T000000
+DTSTART:19430214T000000
 RDATE:19430214T000000
+RDATE:19420215T000000
+RDATE:19410209T000000
+RDATE:19400211T000000
+RDATE:19390212T000000
+RDATE:19380213T000000
+RDATE:19370214T000000
+RDATE:19360209T000000
+RDATE:19350210T000000
+RDATE:19340211T000000
+RDATE:19330212T000000
+RDATE:19320214T000000
+RDATE:19310215T000000
+RDATE:19300209T000000
+RDATE:19290210T000000
+RDATE:19280212T000000
+RDATE:19270213T000000
+RDATE:19260214T000000
+RDATE:19250215T000000
+RDATE:19240210T000000
+RDATE:19230211T000000
+RDATE:19220212T000000
+RDATE:19210213T000000
+RDATE:19200215T000000
+RDATE:19190209T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19731205T000000
-RDATE:19731205T000000
-RDATE:19821218T000000
+TZOFFSETTO:-0530
+TZNAME:CHDT
+DTSTART:19421004T000000
+RDATE:19421004T000000
+RDATE:19411005T000000
+RDATE:19401006T000000
+RDATE:19391008T000000
+RDATE:19381002T000000
+RDATE:19371003T000000
+RDATE:19361004T000000
+RDATE:19351006T000000
+RDATE:19341007T000000
+RDATE:19331008T000000
+RDATE:19321002T000000
+RDATE:19311004T000000
+RDATE:19301005T000000
+RDATE:19291006T000000
+RDATE:19281007T000000
+RDATE:19271002T000000
+RDATE:19261003T000000
+RDATE:19251004T000000
+RDATE:19241005T000000
+RDATE:19231007T000000
+RDATE:19221008T000000
+RDATE:19211002T000000
+RDATE:19201003T000000
+RDATE:19191005T000000
+RDATE:19181006T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0553
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19740209T000000
-RDATE:19740209T000000
-RDATE:19830212T000000
+DTSTART:19120401T000000
+RDATE:19120401T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Boa_Vista.ics b/libical/zoneinfo/America/Boa_Vista.ics
index 932b02f265..e4c3fadd95 100644
--- a/libical/zoneinfo/America/Boa_Vista.ics
+++ b/libical/zoneinfo/America/Boa_Vista.ics
@@ -2,66 +2,66 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Boa_Vista
+TZID:/softwarestudio.org/Olson_20011022_4/America/Boa_Vista
 X-LIC-LOCATION:America/Boa_Vista
 BEGIN:STANDARD
-TZOFFSETFROM:-0403
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:20001015T000000
+RDATE:20001015T000000
+RDATE:20000227T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:AMST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19991003T000000
+DTSTART:20001008T000000
 RDATE:20001008T000000
+RDATE:19991003T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
-RDATE:20000227T000000
-RDATE:20001015T000000
+DTSTART:19990930T000000
+RDATE:19990930T000000
+RDATE:19880912T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0403
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19880912T000000
-RDATE:19880912T000000
-RDATE:19990930T000000
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Bogota.ics b/libical/zoneinfo/America/Bogota.ics
index 7f41fa9bdf..88d06f832d 100644
--- a/libical/zoneinfo/America/Bogota.ics
+++ b/libical/zoneinfo/America/Bogota.ics
@@ -2,21 +2,14 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Bogota
+TZID:/softwarestudio.org/Olson_20011022_4/America/Bogota
 X-LIC-LOCATION:America/Bogota
 BEGIN:STANDARD
-TZOFFSETFROM:-0456
-TZOFFSETTO:-0456
-TZNAME:BMT
-DTSTART:18840313T000000
-RDATE:18840313T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0456
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:COT
-DTSTART:19141123T000000
-RDATE:19141123T000000
+DTSTART:19921231T000000
+RDATE:19921231T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
@@ -26,11 +19,18 @@ DTSTART:19920502T000000
 RDATE:19920502T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0456
 TZOFFSETTO:-0500
 TZNAME:COT
-DTSTART:19921231T000000
-RDATE:19921231T000000
+DTSTART:19141123T000000
+RDATE:19141123T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0456
+TZOFFSETTO:-0456
+TZNAME:BMT
+DTSTART:18840313T000000
+RDATE:18840313T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Boise.ics b/libical/zoneinfo/America/Boise.ics
index bb8461cc96..437101c40e 100644
--- a/libical/zoneinfo/America/Boise.ics
+++ b/libical/zoneinfo/America/Boise.ics
@@ -2,13 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Boise
+TZID:/softwarestudio.org/Olson_20011022_4/America/Boise
 X-LIC-LOCATION:America/Boise
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19751026T020000
+DTSTART:19671029T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
@@ -18,97 +18,89 @@ TZNAME:MDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0745
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0600
+TZNAME:MDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740203T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19740101T000000
+RDATE:19740101T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0800
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19230513T020000
-RDATE:19230513T020000
+DTSTART:19450930T020000
+RDATE:19450930T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
 TZNAME:MPT
 DTSTART:19450814T170000
 RDATE:19450814T170000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19671029T020000
-RDATE:19681027T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19670430T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
+TZNAME:MWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
+TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19740101T000000
-RDATE:19740101T000000
-RDATE:19740203T020000
-RDATE:19741027T020000
+DTSTART:19230513T020000
+RDATE:19230513T020000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0800
+TZNAME:PST
+DTSTART:19191026T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0800
+TZOFFSETTO:-0700
+TZNAME:PDT
+DTSTART:19190330T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0745
+TZOFFSETTO:-0800
+TZNAME:PST
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Buenos_Aires.ics b/libical/zoneinfo/America/Buenos_Aires.ics
index b616995c7d..438297b967 100644
--- a/libical/zoneinfo/America/Buenos_Aires.ics
+++ b/libical/zoneinfo/America/Buenos_Aires.ics
@@ -2,130 +2,130 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Buenos_Aires
+TZID:/softwarestudio.org/Olson_20011022_4/America/Buenos_Aires
 X-LIC-LOCATION:America/Buenos_Aires
 BEGIN:STANDARD
-TZOFFSETFROM:-0354
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
+DTSTART:20000303T000000
+RDATE:20000303T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19301201T000000
-RDATE:19301201T000000
-RDATE:19311015T000000
-RDATE:19321101T000000
-RDATE:19331101T000000
-RDATE:19341101T000000
-RDATE:19351101T000000
-RDATE:19361101T000000
-RDATE:19371101T000000
-RDATE:19381101T000000
-RDATE:19391101T000000
-RDATE:19400701T000000
-RDATE:19411015T000000
-RDATE:19431015T000000
-RDATE:19461001T000000
-RDATE:19631215T000000
-RDATE:19641015T000000
-RDATE:19651015T000000
-RDATE:19661015T000000
-RDATE:19671001T000000
-RDATE:19681006T000000
+DTSTART:19991003T000000
+RDATE:19991003T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19310401T000000
-RDATE:19310401T000000
-RDATE:19320301T000000
-RDATE:19330301T000000
-RDATE:19340301T000000
-RDATE:19350301T000000
-RDATE:19360301T000000
-RDATE:19370301T000000
-RDATE:19380301T000000
-RDATE:19390301T000000
-RDATE:19400301T000000
-RDATE:19410615T000000
-RDATE:19430801T000000
-RDATE:19460301T000000
-RDATE:19631001T000000
-RDATE:19640301T000000
-RDATE:19650301T000000
-RDATE:19660301T000000
-RDATE:19670401T000000
-RDATE:19680407T000000
-RDATE:19690406T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
+DTSTART:19930307T000000
+RDATE:19930307T000000
+RDATE:19920301T000000
+RDATE:19910303T000000
+RDATE:19900304T000000
+RDATE:19890305T000000
+RDATE:19880207T000000
+RDATE:19870213T000000
+RDATE:19860314T000000
+RDATE:19770403T000000
+RDATE:19760404T000000
+RDATE:19750406T000000
+RDATE:19740501T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:ARST
-DTSTART:19740123T000000
-RDATE:19740123T000000
-RDATE:19741006T000000
-RDATE:19751005T000000
-RDATE:19761003T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881201T000000
-RDATE:19891015T000000
-RDATE:19901021T000000
-RDATE:19911020T000000
+DTSTART:19921018T000000
 RDATE:19921018T000000
+RDATE:19911020T000000
+RDATE:19901021T000000
+RDATE:19891015T000000
+RDATE:19881201T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19761003T000000
+RDATE:19751005T000000
+RDATE:19741006T000000
+RDATE:19740123T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19740501T000000
-RDATE:19740501T000000
-RDATE:19750406T000000
-RDATE:19760404T000000
-RDATE:19770403T000000
-RDATE:19860314T000000
-RDATE:19870213T000000
-RDATE:19880207T000000
-RDATE:19890305T000000
-RDATE:19900304T000000
-RDATE:19910303T000000
-RDATE:19920301T000000
-RDATE:19930307T000000
+DTSTART:19691005T000000
+RDATE:19691005T000000
 END:STANDARD
-BEGIN:DAYLIGHT
+BEGIN:STANDARD
 TZOFFSETFROM:-0300
+TZOFFSETTO:-0400
+TZNAME:ART
+DTSTART:19690406T000000
+RDATE:19690406T000000
+RDATE:19680407T000000
+RDATE:19670401T000000
+RDATE:19660301T000000
+RDATE:19650301T000000
+RDATE:19640301T000000
+RDATE:19631001T000000
+RDATE:19460301T000000
+RDATE:19430801T000000
+RDATE:19410615T000000
+RDATE:19400301T000000
+RDATE:19390301T000000
+RDATE:19380301T000000
+RDATE:19370301T000000
+RDATE:19360301T000000
+RDATE:19350301T000000
+RDATE:19340301T000000
+RDATE:19330301T000000
+RDATE:19320301T000000
+RDATE:19310401T000000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
+DTSTART:19681006T000000
+RDATE:19681006T000000
+RDATE:19671001T000000
+RDATE:19661015T000000
+RDATE:19651015T000000
+RDATE:19641015T000000
+RDATE:19631215T000000
+RDATE:19461001T000000
+RDATE:19431015T000000
+RDATE:19411015T000000
+RDATE:19400701T000000
+RDATE:19391101T000000
+RDATE:19381101T000000
+RDATE:19371101T000000
+RDATE:19361101T000000
+RDATE:19351101T000000
+RDATE:19341101T000000
+RDATE:19331101T000000
+RDATE:19321101T000000
+RDATE:19311015T000000
+RDATE:19301201T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
+TZOFFSETFROM:-0417
+TZOFFSETTO:-0400
 TZNAME:ART
-DTSTART:20000303T000000
-RDATE:20000303T000000
+DTSTART:19200501T000000
+RDATE:19200501T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0354
+TZOFFSETTO:-0417
+TZNAME:CMT
+DTSTART:18941101T000000
+RDATE:18941101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cambridge_Bay.ics b/libical/zoneinfo/America/Cambridge_Bay.ics
index 52aa72f73e..52fab73ecc 100644
--- a/libical/zoneinfo/America/Cambridge_Bay.ics
+++ b/libical/zoneinfo/America/Cambridge_Bay.ics
@@ -2,8 +2,15 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Cambridge_Bay
+TZID:/softwarestudio.org/Olson_20011022_4/America/Cambridge_Bay
 X-LIC-LOCATION:America/Cambridge_Bay
+BEGIN:STANDARD
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:20011028T020000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
@@ -11,92 +18,97 @@ TZNAME:MDT
 DTSTART:20020407T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:20021027T020000
-RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+TZOFFSETTO:-0600
+TZNAME:MDT
+DTSTART:20010401T020000
+RDATE:20010401T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:20001105T000000
+RDATE:20001105T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-RDATE:20011028T020000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:20001029T020000
+RDATE:20001029T020000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:20000402T020000
+RDATE:20000402T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19991031T020000
+RDATE:19991031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19190525T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-RDATE:19870405T020000
-RDATE:19880403T020000
-RDATE:19890402T020000
-RDATE:19900401T020000
-RDATE:19910407T020000
-RDATE:19920405T020000
-RDATE:19930404T020000
-RDATE:19940403T020000
-RDATE:19950402T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
+DTSTART:19990404T020000
 RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+RDATE:19950402T020000
+RDATE:19940403T020000
+RDATE:19930404T020000
+RDATE:19920405T020000
+RDATE:19910407T020000
+RDATE:19900401T020000
+RDATE:19890402T020000
+RDATE:19880403T020000
+RDATE:19870405T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19190525T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191101T000000
-RDATE:19450930T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
-RDATE:19841028T020000
-RDATE:19851027T020000
-RDATE:19861026T020000
-RDATE:19871025T020000
-RDATE:19881030T020000
-RDATE:19891029T020000
-RDATE:19901028T020000
-RDATE:19911027T020000
-RDATE:19921025T020000
-RDATE:19931031T020000
-RDATE:19941030T020000
-RDATE:19951029T020000
-RDATE:19961027T020000
-RDATE:19971026T020000
+DTSTART:19981025T020000
 RDATE:19981025T020000
-RDATE:20010401T030000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19951029T020000
+RDATE:19941030T020000
+RDATE:19931031T020000
+RDATE:19921025T020000
+RDATE:19911027T020000
+RDATE:19901028T020000
+RDATE:19891029T020000
+RDATE:19881030T020000
+RDATE:19871025T020000
+RDATE:19861026T020000
+RDATE:19851027T020000
+RDATE:19841028T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19450930T020000
+RDATE:19191101T000000
+RDATE:19181027T020000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0500
-TZNAME:MDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0700
@@ -104,33 +116,26 @@ TZNAME:MST
 DTSTART:19651031T020000
 RDATE:19651031T020000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19991031T020000
-RDATE:19991031T020000
-END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0700
 TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
+TZNAME:MDDT
+DTSTART:19650425T000000
+RDATE:19650425T000000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:20001105T000000
-RDATE:20001105T000000
+TZNAME:MWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cancun.ics b/libical/zoneinfo/America/Cancun.ics
index 8a983eef3e..733b59af96 100644
--- a/libical/zoneinfo/America/Cancun.ics
+++ b/libical/zoneinfo/America/Cancun.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Cancun
+TZID:/softwarestudio.org/Olson_20011022_4/America/Cancun
 X-LIC-LOCATION:America/Cancun
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
@@ -19,65 +19,59 @@ DTSTART:20010930T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0547
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19220101T001256
-RDATE:19220101T001256
+DTSTART:20001029T020000
+RDATE:20001029T020000
+RDATE:19991031T020000
+RDATE:19981025T020000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19811223T000000
-RDATE:19811223T000000
-END:STANDARD
+TZNAME:CDT
+DTSTART:20000402T020000
+RDATE:20000402T020000
+RDATE:19990404T020000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:19980802T020000
+RDATE:19980802T020000
+END:DAYLIGHT
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19960407T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
+DTSTART:19980405T020000
 RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19961027T020000
-RDATE:19961027T020000
+DTSTART:19971026T020000
 RDATE:19971026T020000
+RDATE:19961027T020000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19980802T020000
-RDATE:19980802T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19981025T020000
-RDATE:19981025T020000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19990404T020000
-RDATE:19990404T020000
-RDATE:20000402T020000
-END:DAYLIGHT
+TZNAME:EST
+DTSTART:19811223T000000
+RDATE:19811223T000000
+END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0547
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19991031T020000
-RDATE:19991031T020000
-RDATE:20001029T020000
+DTSTART:19220101T001256
+RDATE:19220101T001256
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Caracas.ics b/libical/zoneinfo/America/Caracas.ics
index c8a2245be0..b478af8af3 100644
--- a/libical/zoneinfo/America/Caracas.ics
+++ b/libical/zoneinfo/America/Caracas.ics
@@ -2,14 +2,14 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Caracas
+TZID:/softwarestudio.org/Olson_20011022_4/America/Caracas
 X-LIC-LOCATION:America/Caracas
 BEGIN:STANDARD
-TZOFFSETFROM:-0428
-TZOFFSETTO:-0428
-TZNAME:CMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+TZOFFSETFROM:-0430
+TZOFFSETTO:-0400
+TZNAME:VET
+DTSTART:19650101T000000
+RDATE:19650101T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0428
@@ -19,11 +19,11 @@ DTSTART:19120212T000000
 RDATE:19120212T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0430
-TZOFFSETTO:-0400
-TZNAME:VET
-DTSTART:19650101T000000
-RDATE:19650101T000000
+TZOFFSETFROM:-0428
+TZOFFSETTO:-0428
+TZNAME:CMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Catamarca.ics b/libical/zoneinfo/America/Catamarca.ics
index 2e4816c357..1069f6c605 100644
--- a/libical/zoneinfo/America/Catamarca.ics
+++ b/libical/zoneinfo/America/Catamarca.ics
@@ -2,129 +2,129 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Catamarca
+TZID:/softwarestudio.org/Olson_20011022_4/America/Catamarca
 X-LIC-LOCATION:America/Catamarca
 BEGIN:STANDARD
-TZOFFSETFROM:-0423
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
+DTSTART:20000303T000000
+RDATE:20000303T000000
+RDATE:19920701T000000
+RDATE:19910701T000000
+RDATE:19900701T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19301201T000000
-RDATE:19301201T000000
-RDATE:19311015T000000
-RDATE:19321101T000000
-RDATE:19331101T000000
-RDATE:19341101T000000
-RDATE:19351101T000000
-RDATE:19361101T000000
-RDATE:19371101T000000
-RDATE:19381101T000000
-RDATE:19391101T000000
-RDATE:19400701T000000
-RDATE:19411015T000000
-RDATE:19431015T000000
-RDATE:19461001T000000
-RDATE:19631215T000000
-RDATE:19641015T000000
-RDATE:19651015T000000
-RDATE:19661015T000000
-RDATE:19671001T000000
-RDATE:19681006T000000
+DTSTART:19991003T000000
+RDATE:19991003T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19310401T000000
-RDATE:19310401T000000
-RDATE:19320301T000000
-RDATE:19330301T000000
-RDATE:19340301T000000
-RDATE:19350301T000000
-RDATE:19360301T000000
-RDATE:19370301T000000
-RDATE:19380301T000000
-RDATE:19390301T000000
-RDATE:19400301T000000
-RDATE:19410615T000000
-RDATE:19430801T000000
-RDATE:19460301T000000
-RDATE:19631001T000000
-RDATE:19640301T000000
-RDATE:19650301T000000
-RDATE:19660301T000000
-RDATE:19670401T000000
-RDATE:19680407T000000
-RDATE:19690406T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
+DTSTART:19920301T000000
+RDATE:19920301T000000
+RDATE:19900304T000000
+RDATE:19890305T000000
+RDATE:19880207T000000
+RDATE:19870213T000000
+RDATE:19860314T000000
+RDATE:19770403T000000
+RDATE:19760404T000000
+RDATE:19750406T000000
+RDATE:19740501T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:ARST
-DTSTART:19740123T000000
-RDATE:19740123T000000
-RDATE:19741006T000000
-RDATE:19751005T000000
-RDATE:19761003T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881201T000000
-RDATE:19891015T000000
+DTSTART:19911020T000000
 RDATE:19911020T000000
+RDATE:19891015T000000
+RDATE:19881201T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19761003T000000
+RDATE:19751005T000000
+RDATE:19741006T000000
+RDATE:19740123T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19740501T000000
-RDATE:19740501T000000
-RDATE:19750406T000000
-RDATE:19760404T000000
-RDATE:19770403T000000
-RDATE:19860314T000000
-RDATE:19870213T000000
-RDATE:19880207T000000
-RDATE:19890305T000000
-RDATE:19900304T000000
-RDATE:19920301T000000
+DTSTART:19691005T000000
+RDATE:19691005T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
+TZOFFSETTO:-0400
 TZNAME:ART
-DTSTART:19900701T000000
-RDATE:19900701T000000
-RDATE:19910701T000000
-RDATE:19920701T000000
-RDATE:20000303T000000
+DTSTART:19690406T000000
+RDATE:19690406T000000
+RDATE:19680407T000000
+RDATE:19670401T000000
+RDATE:19660301T000000
+RDATE:19650301T000000
+RDATE:19640301T000000
+RDATE:19631001T000000
+RDATE:19460301T000000
+RDATE:19430801T000000
+RDATE:19410615T000000
+RDATE:19400301T000000
+RDATE:19390301T000000
+RDATE:19380301T000000
+RDATE:19370301T000000
+RDATE:19360301T000000
+RDATE:19350301T000000
+RDATE:19340301T000000
+RDATE:19330301T000000
+RDATE:19320301T000000
+RDATE:19310401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
+DTSTART:19681006T000000
+RDATE:19681006T000000
+RDATE:19671001T000000
+RDATE:19661015T000000
+RDATE:19651015T000000
+RDATE:19641015T000000
+RDATE:19631215T000000
+RDATE:19461001T000000
+RDATE:19431015T000000
+RDATE:19411015T000000
+RDATE:19400701T000000
+RDATE:19391101T000000
+RDATE:19381101T000000
+RDATE:19371101T000000
+RDATE:19361101T000000
+RDATE:19351101T000000
+RDATE:19341101T000000
+RDATE:19331101T000000
+RDATE:19321101T000000
+RDATE:19311015T000000
+RDATE:19301201T000000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0417
+TZOFFSETTO:-0400
+TZNAME:ART
+DTSTART:19200501T000000
+RDATE:19200501T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0423
+TZOFFSETTO:-0417
+TZNAME:CMT
+DTSTART:18941101T000000
+RDATE:18941101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cayenne.ics b/libical/zoneinfo/America/Cayenne.ics
index e405ff629c..26f9dfa33a 100644
--- a/libical/zoneinfo/America/Cayenne.ics
+++ b/libical/zoneinfo/America/Cayenne.ics
@@ -2,21 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Cayenne
+TZID:/softwarestudio.org/Olson_20011022_4/America/Cayenne
 X-LIC-LOCATION:America/Cayenne
 BEGIN:STANDARD
-TZOFFSETFROM:-0329
-TZOFFSETTO:-0400
-TZNAME:GFT
-DTSTART:19110701T000000
-RDATE:19110701T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:GFT
 DTSTART:19671001T000000
 RDATE:19671001T000000
 END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0329
+TZOFFSETTO:-0400
+TZNAME:GFT
+DTSTART:19110701T000000
+RDATE:19110701T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cayman.ics b/libical/zoneinfo/America/Cayman.ics
index 1715b0fc5a..b29274995a 100644
--- a/libical/zoneinfo/America/Cayman.ics
+++ b/libical/zoneinfo/America/Cayman.ics
@@ -2,21 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Cayman
+TZID:/softwarestudio.org/Olson_20011022_4/America/Cayman
 X-LIC-LOCATION:America/Cayman
 BEGIN:STANDARD
-TZOFFSETFROM:-0526
-TZOFFSETTO:-0507
-TZNAME:KMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0507
 TZOFFSETTO:-0500
 TZNAME:EST
 DTSTART:19120201T000000
 RDATE:19120201T000000
 END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0526
+TZOFFSETTO:-0507
+TZNAME:KMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Chicago.ics b/libical/zoneinfo/America/Chicago.ics
index 50f1df65b9..b7b920f37d 100644
--- a/libical/zoneinfo/America/Chicago.ics
+++ b/libical/zoneinfo/America/Chicago.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Chicago
+TZID:/softwarestudio.org/Olson_20011022_4/America/Chicago
 X-LIC-LOCATION:America/Chicago
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
@@ -18,140 +18,133 @@ TZNAME:CDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0551
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19200613T020000
-RDATE:19210327T020000
-RDATE:19220430T020000
-RDATE:19230429T020000
-RDATE:19240427T020000
-RDATE:19250426T020000
-RDATE:19260425T020000
-RDATE:19270424T020000
-RDATE:19280429T020000
-RDATE:19290428T020000
-RDATE:19300427T020000
-RDATE:19310426T020000
-RDATE:19320424T020000
-RDATE:19330430T020000
-RDATE:19340429T020000
-RDATE:19350428T020000
-RDATE:19370425T020000
-RDATE:19380424T020000
-RDATE:19390430T020000
-RDATE:19400428T020000
-RDATE:19410427T020000
-RDATE:19460428T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19610430T020000
-RDATE:19620429T020000
-RDATE:19630428T020000
-RDATE:19640426T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19640426T020000
+RDATE:19630428T020000
+RDATE:19620429T020000
+RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460428T020000
+RDATE:19410427T020000
+RDATE:19400428T020000
+RDATE:19390430T020000
+RDATE:19380424T020000
+RDATE:19370425T020000
+RDATE:19350428T020000
+RDATE:19340429T020000
+RDATE:19330430T020000
+RDATE:19320424T020000
+RDATE:19310426T020000
+RDATE:19300427T020000
+RDATE:19290428T020000
+RDATE:19280429T020000
+RDATE:19270424T020000
+RDATE:19260425T020000
+RDATE:19250426T020000
+RDATE:19240427T020000
+RDATE:19230429T020000
+RDATE:19220430T020000
+RDATE:19210327T020000
+RDATE:19200613T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19201031T020000
-RDATE:19211030T020000
-RDATE:19220924T020000
-RDATE:19230930T020000
-RDATE:19240928T020000
-RDATE:19250927T020000
-RDATE:19260926T020000
-RDATE:19270925T020000
-RDATE:19280930T020000
-RDATE:19290929T020000
-RDATE:19300928T020000
-RDATE:19310927T020000
-RDATE:19320925T020000
-RDATE:19330924T020000
-RDATE:19340930T020000
-RDATE:19350929T020000
-RDATE:19361115T020000
-RDATE:19370926T020000
-RDATE:19380925T020000
-RDATE:19390924T020000
-RDATE:19400929T020000
-RDATE:19410928T020000
-RDATE:19450930T020000
-RDATE:19460929T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
+DTSTART:19670101T000000
+RDATE:19670101T000000
+RDATE:19460101T000000
+RDATE:19420101T000000
+RDATE:19200101T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19200101T000000
-RDATE:19200101T000000
-RDATE:19420101T000000
-RDATE:19460101T000000
-RDATE:19670101T000000
+DTSTART:19540926T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19460929T020000
+RDATE:19450930T020000
+RDATE:19410928T020000
+RDATE:19400929T020000
+RDATE:19390924T020000
+RDATE:19380925T020000
+RDATE:19370926T020000
+RDATE:19361115T020000
+RDATE:19350929T020000
+RDATE:19340930T020000
+RDATE:19330924T020000
+RDATE:19320925T020000
+RDATE:19310927T020000
+RDATE:19300928T020000
+RDATE:19290929T020000
+RDATE:19280930T020000
+RDATE:19270925T020000
+RDATE:19260926T020000
+RDATE:19250927T020000
+RDATE:19240928T020000
+RDATE:19230930T020000
+RDATE:19220924T020000
+RDATE:19211030T020000
+RDATE:19201031T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19360301T020000
-RDATE:19360301T020000
-END:STANDARD
+TZNAME:CPT
+DTSTART:19450814T180000
+RDATE:19450814T180000
+END:DAYLIGHT
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
@@ -159,12 +152,19 @@ TZNAME:CWT
 DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
+BEGIN:STANDARD
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
+TZNAME:EST
+DTSTART:19360301T020000
+RDATE:19360301T020000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0551
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18831118T120000
+RDATE:18831118T120000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Chihuahua.ics b/libical/zoneinfo/America/Chihuahua.ics
index 15023f34da..df51c747ec 100644
--- a/libical/zoneinfo/America/Chihuahua.ics
+++ b/libical/zoneinfo/America/Chihuahua.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Chihuahua
+TZID:/softwarestudio.org/Olson_20011022_4/America/Chihuahua
 X-LIC-LOCATION:America/Chihuahua
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
@@ -19,70 +19,70 @@ DTSTART:20010930T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0704
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19211231T235540
-RDATE:19211231T235540
+DTSTART:20001029T020000
+RDATE:20001029T020000
+RDATE:19991031T020000
+RDATE:19981025T020000
+RDATE:19311001T000000
+RDATE:19301115T000000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19270610T230000
-RDATE:19270610T230000
-RDATE:19310501T230000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:STANDARD
+TZNAME:MDT
+DTSTART:20000402T020000
+RDATE:20000402T020000
+RDATE:19990404T020000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19301115T000000
-RDATE:19301115T000000
-RDATE:19311001T000000
-RDATE:19980405T030000
-RDATE:19991031T020000
-RDATE:20001029T020000
-END:STANDARD
+TZOFFSETTO:-0600
+TZNAME:MDT
+DTSTART:19980405T020000
+RDATE:19980405T020000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19960101T000000
-RDATE:19960101T000000
+DTSTART:19980101T000000
 RDATE:19980101T000000
+RDATE:19960101T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19971026T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19960407T020000
-RDATE:19960407T020000
+DTSTART:19970406T020000
 RDATE:19970406T020000
+RDATE:19960407T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19961027T020000
-RDATE:19961027T020000
-RDATE:19971026T020000
+DTSTART:19320401T000000
+RDATE:19320401T000000
+RDATE:19310501T230000
+RDATE:19270610T230000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
+TZOFFSETFROM:-0704
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19981025T020000
-RDATE:19981025T020000
+DTSTART:19211231T235540
+RDATE:19211231T235540
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19990404T020000
-RDATE:19990404T020000
-RDATE:20000402T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cordoba.ics b/libical/zoneinfo/America/Cordoba.ics
index 39544553c5..a3b1bd4bcf 100644
--- a/libical/zoneinfo/America/Cordoba.ics
+++ b/libical/zoneinfo/America/Cordoba.ics
@@ -2,125 +2,125 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Cordoba
+TZID:/softwarestudio.org/Olson_20011022_4/America/Cordoba
 X-LIC-LOCATION:America/Cordoba
 BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
+DTSTART:20000303T000000
+RDATE:20000303T000000
+RDATE:19900701T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19301201T000000
-RDATE:19301201T000000
-RDATE:19311015T000000
-RDATE:19321101T000000
-RDATE:19331101T000000
-RDATE:19341101T000000
-RDATE:19351101T000000
-RDATE:19361101T000000
-RDATE:19371101T000000
-RDATE:19381101T000000
-RDATE:19391101T000000
-RDATE:19400701T000000
-RDATE:19411015T000000
-RDATE:19431015T000000
-RDATE:19461001T000000
-RDATE:19631215T000000
-RDATE:19641015T000000
-RDATE:19651015T000000
-RDATE:19661015T000000
-RDATE:19671001T000000
-RDATE:19681006T000000
+DTSTART:19991003T000000
+RDATE:19991003T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19310401T000000
-RDATE:19310401T000000
-RDATE:19320301T000000
-RDATE:19330301T000000
-RDATE:19340301T000000
-RDATE:19350301T000000
-RDATE:19360301T000000
-RDATE:19370301T000000
-RDATE:19380301T000000
-RDATE:19390301T000000
-RDATE:19400301T000000
-RDATE:19410615T000000
-RDATE:19430801T000000
-RDATE:19460301T000000
-RDATE:19631001T000000
-RDATE:19640301T000000
-RDATE:19650301T000000
-RDATE:19660301T000000
-RDATE:19670401T000000
-RDATE:19680407T000000
-RDATE:19690406T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
+DTSTART:19900304T000000
+RDATE:19900304T000000
+RDATE:19890305T000000
+RDATE:19880207T000000
+RDATE:19870213T000000
+RDATE:19860314T000000
+RDATE:19770403T000000
+RDATE:19760404T000000
+RDATE:19750406T000000
+RDATE:19740501T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:ARST
-DTSTART:19740123T000000
-RDATE:19740123T000000
-RDATE:19741006T000000
-RDATE:19751005T000000
-RDATE:19761003T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881201T000000
+DTSTART:19891015T000000
 RDATE:19891015T000000
+RDATE:19881201T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19761003T000000
+RDATE:19751005T000000
+RDATE:19741006T000000
+RDATE:19740123T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19740501T000000
-RDATE:19740501T000000
-RDATE:19750406T000000
-RDATE:19760404T000000
-RDATE:19770403T000000
-RDATE:19860314T000000
-RDATE:19870213T000000
-RDATE:19880207T000000
-RDATE:19890305T000000
-RDATE:19900304T000000
+DTSTART:19691005T000000
+RDATE:19691005T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
+TZOFFSETTO:-0400
 TZNAME:ART
-DTSTART:19900701T000000
-RDATE:19900701T000000
-RDATE:20000303T000000
+DTSTART:19690406T000000
+RDATE:19690406T000000
+RDATE:19680407T000000
+RDATE:19670401T000000
+RDATE:19660301T000000
+RDATE:19650301T000000
+RDATE:19640301T000000
+RDATE:19631001T000000
+RDATE:19460301T000000
+RDATE:19430801T000000
+RDATE:19410615T000000
+RDATE:19400301T000000
+RDATE:19390301T000000
+RDATE:19380301T000000
+RDATE:19370301T000000
+RDATE:19360301T000000
+RDATE:19350301T000000
+RDATE:19340301T000000
+RDATE:19330301T000000
+RDATE:19320301T000000
+RDATE:19310401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
+DTSTART:19681006T000000
+RDATE:19681006T000000
+RDATE:19671001T000000
+RDATE:19661015T000000
+RDATE:19651015T000000
+RDATE:19641015T000000
+RDATE:19631215T000000
+RDATE:19461001T000000
+RDATE:19431015T000000
+RDATE:19411015T000000
+RDATE:19400701T000000
+RDATE:19391101T000000
+RDATE:19381101T000000
+RDATE:19371101T000000
+RDATE:19361101T000000
+RDATE:19351101T000000
+RDATE:19341101T000000
+RDATE:19331101T000000
+RDATE:19321101T000000
+RDATE:19311015T000000
+RDATE:19301201T000000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0417
+TZOFFSETTO:-0400
+TZNAME:ART
+DTSTART:19200501T000000
+RDATE:19200501T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0417
+TZOFFSETTO:-0417
+TZNAME:CMT
+DTSTART:18941101T000000
+RDATE:18941101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Costa_Rica.ics b/libical/zoneinfo/America/Costa_Rica.ics
index d999a65645..38369460ec 100644
--- a/libical/zoneinfo/America/Costa_Rica.ics
+++ b/libical/zoneinfo/America/Costa_Rica.ics
@@ -2,41 +2,41 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Costa_Rica
+TZID:/softwarestudio.org/Olson_20011022_4/America/Costa_Rica
 X-LIC-LOCATION:America/Costa_Rica
 BEGIN:STANDARD
-TZOFFSETFROM:-0536
-TZOFFSETTO:-0536
-TZNAME:SJMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0536
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19210115T000000
-RDATE:19210115T000000
+DTSTART:19920315T000000
+RDATE:19920315T000000
+RDATE:19910701T000000
+RDATE:19800601T000000
+RDATE:19790603T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19790225T000000
-RDATE:19790225T000000
-RDATE:19800224T000000
-RDATE:19910119T000000
+DTSTART:19920118T000000
 RDATE:19920118T000000
+RDATE:19910119T000000
+RDATE:19800224T000000
+RDATE:19790225T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0536
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19790603T000000
-RDATE:19790603T000000
-RDATE:19800601T000000
-RDATE:19910701T000000
-RDATE:19920315T000000
+DTSTART:19210115T000000
+RDATE:19210115T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0536
+TZOFFSETTO:-0536
+TZNAME:SJMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cuiaba.ics b/libical/zoneinfo/America/Cuiaba.ics
index 8584ada2b4..c306615f7b 100644
--- a/libical/zoneinfo/America/Cuiaba.ics
+++ b/libical/zoneinfo/America/Cuiaba.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Cuiaba
+TZID:/softwarestudio.org/Olson_20011022_4/America/Cuiaba
 X-LIC-LOCATION:America/Cuiaba
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
@@ -19,75 +19,75 @@ DTSTART:20010218T000000
 RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0344
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:20000227T000000
+RDATE:20000227T000000
+RDATE:19990221T000000
+RDATE:19980301T000000
+RDATE:19970216T000000
+RDATE:19960211T000000
+RDATE:19950219T000000
+RDATE:19940220T000000
+RDATE:19930131T000000
+RDATE:19920209T000000
+RDATE:19910217T000000
+RDATE:19900211T000000
+RDATE:19890129T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:AMST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881016T000000
-RDATE:19891015T000000
-RDATE:19901021T000000
-RDATE:19911020T000000
-RDATE:19921025T000000
-RDATE:19931017T000000
-RDATE:19941016T000000
-RDATE:19951015T000000
-RDATE:19961006T000000
-RDATE:19971006T000000
-RDATE:19981011T000000
+DTSTART:19991003T000000
 RDATE:19991003T000000
+RDATE:19981011T000000
+RDATE:19971006T000000
+RDATE:19961006T000000
+RDATE:19951015T000000
+RDATE:19941016T000000
+RDATE:19931017T000000
+RDATE:19921025T000000
+RDATE:19911020T000000
+RDATE:19901021T000000
+RDATE:19891015T000000
+RDATE:19881016T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0344
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
-RDATE:19890129T000000
-RDATE:19900211T000000
-RDATE:19910217T000000
-RDATE:19920209T000000
-RDATE:19930131T000000
-RDATE:19940220T000000
-RDATE:19950219T000000
-RDATE:19960211T000000
-RDATE:19970216T000000
-RDATE:19980301T000000
-RDATE:19990221T000000
-RDATE:20000227T000000
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Curacao.ics b/libical/zoneinfo/America/Curacao.ics
index 32dc4fa2b3..f21577fa4a 100644
--- a/libical/zoneinfo/America/Curacao.ics
+++ b/libical/zoneinfo/America/Curacao.ics
@@ -2,21 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Curacao
+TZID:/softwarestudio.org/Olson_20011022_4/America/Curacao
 X-LIC-LOCATION:America/Curacao
 BEGIN:STANDARD
-TZOFFSETFROM:-0436
-TZOFFSETTO:-0430
-TZNAME:ANT
-DTSTART:19120212T000000
-RDATE:19120212T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0430
 TZOFFSETTO:-0400
 TZNAME:AST
 DTSTART:19650101T000000
 RDATE:19650101T000000
 END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0436
+TZOFFSETTO:-0430
+TZNAME:ANT
+DTSTART:19120212T000000
+RDATE:19120212T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Dawson.ics b/libical/zoneinfo/America/Dawson.ics
index 7100a72eb5..04de650c78 100644
--- a/libical/zoneinfo/America/Dawson.ics
+++ b/libical/zoneinfo/America/Dawson.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Dawson
+TZID:/softwarestudio.org/Olson_20011022_4/America/Dawson
 X-LIC-LOCATION:America/Dawson
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
@@ -18,29 +18,48 @@ TZNAME:PDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0800
+TZOFFSETTO:-0700
+TZNAME:PDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0918
+TZOFFSETFROM:-0900
+TZOFFSETTO:-0800
+TZNAME:PST
+DTSTART:19731028T000000
+RDATE:19731028T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0700
 TZOFFSETTO:-0900
 TZNAME:YST
-DTSTART:19000820T000000
-RDATE:19000820T000000
+DTSTART:19651031T020000
+RDATE:19651031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:YDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19190525T020000
+TZOFFSETTO:-0700
+TZNAME:YDDT
+DTSTART:19650425T000000
+RDATE:19650425T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0900
 TZNAME:YST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191101T000000
+DTSTART:19450930T020000
 RDATE:19450930T020000
+RDATE:19191101T000000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
@@ -51,37 +70,18 @@ RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
-TZOFFSETTO:-0700
-TZNAME:YDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
+TZOFFSETTO:-0800
+TZNAME:YDT
+DTSTART:19190525T020000
+RDATE:19190525T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
+TZOFFSETFROM:-0918
 TZOFFSETTO:-0900
 TZNAME:YST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19731028T000000
-RDATE:19731028T000000
+DTSTART:19000820T000000
+RDATE:19000820T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19800427T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Dawson_Creek.ics b/libical/zoneinfo/America/Dawson_Creek.ics
index c3ae9daec6..00ca05715f 100644
--- a/libical/zoneinfo/America/Dawson_Creek.ics
+++ b/libical/zoneinfo/America/Dawson_Creek.ics
@@ -2,80 +2,87 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Dawson_Creek
+TZID:/softwarestudio.org/Olson_20011022_4/America/Dawson_Creek
 X-LIC-LOCATION:America/Dawson_Creek
 BEGIN:STANDARD
-TZOFFSETFROM:-0801
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:18840101T000000
-RDATE:18840101T000000
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19720830T020000
+RDATE:19720830T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:PDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19610430T020000
-RDATE:19620429T020000
-RDATE:19630428T020000
-RDATE:19640426T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
+DTSTART:19720430T020000
 RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19640426T020000
+RDATE:19630428T020000
+RDATE:19620429T020000
+RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19181031T020000
-RDATE:19181031T020000
-RDATE:19450930T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19590927T020000
-RDATE:19600925T020000
-RDATE:19610924T020000
-RDATE:19621028T020000
-RDATE:19631027T020000
-RDATE:19641025T020000
-RDATE:19651031T020000
-RDATE:19661030T020000
-RDATE:19671029T020000
-RDATE:19681027T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
+DTSTART:19711031T020000
 RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19681027T020000
+RDATE:19671029T020000
+RDATE:19661030T020000
+RDATE:19651031T020000
+RDATE:19641025T020000
+RDATE:19631027T020000
+RDATE:19621028T020000
+RDATE:19610924T020000
+RDATE:19600925T020000
+RDATE:19590927T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19450930T020000
+RDATE:19181031T020000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0800
+TZOFFSETTO:-0800
+TZNAME:PST
+DTSTART:19470101T000000
+RDATE:19470101T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
@@ -85,18 +92,11 @@ DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0800
+TZOFFSETFROM:-0801
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19470101T000000
-RDATE:19470101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19720830T020000
-RDATE:19720830T020000
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Denver.ics b/libical/zoneinfo/America/Denver.ics
index 036d516125..75b4ad33ec 100644
--- a/libical/zoneinfo/America/Denver.ics
+++ b/libical/zoneinfo/America/Denver.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Denver
+TZID:/softwarestudio.org/Olson_20011022_4/America/Denver
 X-LIC-LOCATION:America/Denver
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
@@ -18,73 +18,73 @@ TZNAME:MDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-RDATE:19200101T000000
-RDATE:19420101T000000
-RDATE:19460101T000000
-RDATE:19670101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19200328T020000
-RDATE:19210327T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19210327T020000
+RDATE:19200328T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19670101T000000
+RDATE:19670101T000000
+RDATE:19460101T000000
+RDATE:19420101T000000
+RDATE:19200101T000000
+RDATE:18831118T120000
+END:STANDARD
+BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19201031T020000
-RDATE:19210522T020000
+DTSTART:19450930T020000
 RDATE:19450930T020000
+RDATE:19210522T020000
+RDATE:19201031T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
 TZNAME:MPT
 DTSTART:19450814T170000
 RDATE:19450814T170000
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0600
+TZNAME:MWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Detroit.ics b/libical/zoneinfo/America/Detroit.ics
index b8a94b6790..545c7b8190 100644
--- a/libical/zoneinfo/America/Detroit.ics
+++ b/libical/zoneinfo/America/Detroit.ics
@@ -2,13 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Detroit
+TZID:/softwarestudio.org/Olson_20011022_4/America/Detroit
 X-LIC-LOCATION:America/Detroit
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19761031T020000
+DTSTART:19731028T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
@@ -18,77 +18,74 @@ TZNAME:EDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19670614T020000
+RDATE:19480425T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0532
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19050101T000000
-RDATE:19050101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19150515T020000
-RDATE:19150515T020000
+DTSTART:19750101T000000
+RDATE:19750101T000000
+RDATE:19730101T000000
+RDATE:19460101T000000
+RDATE:19420101T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19420101T000000
-RDATE:19420101T000000
-RDATE:19460101T000000
-RDATE:19730101T000000
-RDATE:19750101T000000
-RDATE:19750427T020000
-RDATE:19751026T020000
+DTSTART:19671029T020000
+RDATE:19671029T020000
+RDATE:19480926T020000
+RDATE:19450930T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:EPT
 DTSTART:19450814T190000
 RDATE:19450814T190000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19480926T020000
-RDATE:19671029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19480425T020000
-RDATE:19480425T020000
-RDATE:19670614T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
+TZNAME:EWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19150515T020000
+RDATE:19150515T020000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0532
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19050101T000000
+RDATE:19050101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Edmonton.ics b/libical/zoneinfo/America/Edmonton.ics
index da5f7cd086..a9c57f0b25 100644
--- a/libical/zoneinfo/America/Edmonton.ics
+++ b/libical/zoneinfo/America/Edmonton.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Edmonton
+TZID:/softwarestudio.org/Olson_20011022_4/America/Edmonton
 X-LIC-LOCATION:America/Edmonton
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
@@ -18,58 +18,51 @@ TZNAME:MDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0734
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19060901T000000
-RDATE:19060901T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19190413T020000
-RDATE:19200425T020000
-RDATE:19210424T020000
-RDATE:19220430T020000
-RDATE:19230429T020000
-RDATE:19470427T020000
-RDATE:19670430T020000
-RDATE:19690427T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19690427T020000
+RDATE:19670430T020000
+RDATE:19470427T020000
+RDATE:19230429T020000
+RDATE:19220430T020000
+RDATE:19210424T020000
+RDATE:19200425T020000
+RDATE:19190413T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19181031T020000
-RDATE:19181031T020000
-RDATE:19190527T020000
-RDATE:19201031T020000
-RDATE:19210925T020000
-RDATE:19220924T020000
-RDATE:19230930T020000
-RDATE:19450930T020000
-RDATE:19470928T020000
-RDATE:19671029T020000
+DTSTART:19691026T020000
 RDATE:19691026T020000
+RDATE:19671029T020000
+RDATE:19470928T020000
+RDATE:19450930T020000
+RDATE:19230930T020000
+RDATE:19220924T020000
+RDATE:19210925T020000
+RDATE:19201031T020000
+RDATE:19190527T020000
+RDATE:19181031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
@@ -78,5 +71,12 @@ TZNAME:MWT
 DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0734
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19060901T000000
+RDATE:19060901T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Eirunepe.ics b/libical/zoneinfo/America/Eirunepe.ics
index d9abf667a3..db1b722425 100644
--- a/libical/zoneinfo/America/Eirunepe.ics
+++ b/libical/zoneinfo/America/Eirunepe.ics
@@ -2,65 +2,65 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Eirunepe
+TZID:/softwarestudio.org/Olson_20011022_4/America/Eirunepe
 X-LIC-LOCATION:America/Eirunepe
 BEGIN:STANDARD
-TZOFFSETFROM:-0439
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:ACT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19940922T000000
+RDATE:19940922T000000
+RDATE:19930928T000000
+RDATE:19880912T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:ACST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19931017T000000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:ACT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
+DTSTART:19940220T000000
 RDATE:19940220T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:ACST
+DTSTART:19931017T000000
+RDATE:19931017T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0439
 TZOFFSETTO:-0500
 TZNAME:ACT
-DTSTART:19880912T000000
-RDATE:19880912T000000
-RDATE:19930928T000000
-RDATE:19940922T000000
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/El_Salvador.ics b/libical/zoneinfo/America/El_Salvador.ics
index 4b72a4269a..27b1415f65 100644
--- a/libical/zoneinfo/America/El_Salvador.ics
+++ b/libical/zoneinfo/America/El_Salvador.ics
@@ -2,30 +2,30 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/El_Salvador
+TZID:/softwarestudio.org/Olson_20011022_4/America/El_Salvador
 X-LIC-LOCATION:America/El_Salvador
 BEGIN:STANDARD
-TZOFFSETFROM:-0557
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19210101T000000
-RDATE:19210101T000000
+DTSTART:19880925T000000
+RDATE:19880925T000000
+RDATE:19870927T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19870503T000000
-RDATE:19870503T000000
+DTSTART:19880501T000000
 RDATE:19880501T000000
+RDATE:19870503T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0557
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19870927T000000
-RDATE:19870927T000000
-RDATE:19880925T000000
+DTSTART:19210101T000000
+RDATE:19210101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Fortaleza.ics b/libical/zoneinfo/America/Fortaleza.ics
index 1b84eca7d1..5cfcd796f0 100644
--- a/libical/zoneinfo/America/Fortaleza.ics
+++ b/libical/zoneinfo/America/Fortaleza.ics
@@ -2,70 +2,84 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Fortaleza
+TZID:/softwarestudio.org/Olson_20011022_4/America/Fortaleza
 X-LIC-LOCATION:America/Fortaleza
-BEGIN:STANDARD
-TZOFFSETFROM:-0234
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881016T000000
-RDATE:19891015T000000
-RDATE:19991003T000000
-RDATE:20001008T000000
+DTSTART:20001008T000000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
-RDATE:19890129T000000
-RDATE:19900211T000000
-RDATE:20000227T000000
-RDATE:20001022T000000
+DTSTART:20020217T000000
+RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19900917T000000
-RDATE:19900917T000000
+DTSTART:20010913T000000
+RDATE:20010913T000000
 RDATE:19990930T000000
+RDATE:19900917T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0200
+TZOFFSETTO:-0300
+TZNAME:BRT
+DTSTART:20001022T000000
+RDATE:20001022T000000
+RDATE:20000227T000000
+RDATE:19900211T000000
+RDATE:19890129T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0200
+TZNAME:BRST
+DTSTART:19991003T000000
+RDATE:19991003T000000
+RDATE:19891015T000000
+RDATE:19881016T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0234
+TZOFFSETTO:-0300
+TZNAME:BRT
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Glace_Bay.ics b/libical/zoneinfo/America/Glace_Bay.ics
index 308cb0ad83..868764f729 100644
--- a/libical/zoneinfo/America/Glace_Bay.ics
+++ b/libical/zoneinfo/America/Glace_Bay.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Glace_Bay
+TZID:/softwarestudio.org/Olson_20011022_4/America/Glace_Bay
 X-LIC-LOCATION:America/Glace_Bay
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
@@ -18,47 +18,47 @@ TZNAME:ADT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19020615T000000
-RDATE:19020615T000000
-RDATE:19530101T000000
-RDATE:19540101T000000
-RDATE:19720101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ADT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19530426T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19530426T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0400
+TZNAME:AST
+DTSTART:19720101T000000
+RDATE:19720101T000000
+RDATE:19540101T000000
+RDATE:19530101T000000
+RDATE:19020615T000000
+END:STANDARD
+BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19181031T020000
-RDATE:19181031T020000
-RDATE:19450930T020000
+DTSTART:19530927T020000
 RDATE:19530927T020000
+RDATE:19450930T020000
+RDATE:19181031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
diff --git a/libical/zoneinfo/America/Godthab.ics b/libical/zoneinfo/America/Godthab.ics
index 9d437433c1..005fb19a76 100644
--- a/libical/zoneinfo/America/Godthab.ics
+++ b/libical/zoneinfo/America/Godthab.ics
@@ -2,57 +2,57 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Godthab
+TZID:/softwarestudio.org/Olson_20011022_4/America/Godthab
 X-LIC-LOCATION:America/Godthab
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:WGST
 DTSTART:19810328T220000
-RRULE:FREQ=YEARLY;BYMONTH=3;BYMONTHDAY=24,25,26,27,28,29,30;BYDAY=SA
+RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SA
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:WGT
 DTSTART:19961026T230000
-RRULE:FREQ=YEARLY;BYMONTH=10;BYMONTHDAY=24,25,26,27,28,29,30;BYDAY=SA
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SA
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0327
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:WGT
-DTSTART:19160728T000000
-RDATE:19160728T000000
+DTSTART:19950923T230000
+RDATE:19950923T230000
+RDATE:19940924T230000
+RDATE:19930925T230000
+RDATE:19920926T230000
+RDATE:19910928T230000
+RDATE:19900929T230000
+RDATE:19890923T230000
+RDATE:19880924T230000
+RDATE:19870926T230000
+RDATE:19860927T230000
+RDATE:19850928T230000
+RDATE:19840929T230000
+RDATE:19830924T230000
+RDATE:19820925T230000
+RDATE:19810926T230000
+RDATE:19800927T230000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:WGT
+TZOFFSETTO:-0200
+TZNAME:WGST
 DTSTART:19800406T020000
 RDATE:19800406T020000
-RDATE:19800927T220000
-END:STANDARD
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
+TZOFFSETFROM:-0327
 TZOFFSETTO:-0300
 TZNAME:WGT
-DTSTART:19810926T230000
-RDATE:19810926T230000
-RDATE:19820925T230000
-RDATE:19830924T230000
-RDATE:19840929T230000
-RDATE:19850928T230000
-RDATE:19860927T230000
-RDATE:19870926T230000
-RDATE:19880924T230000
-RDATE:19890923T230000
-RDATE:19900929T230000
-RDATE:19910928T230000
-RDATE:19920926T230000
-RDATE:19930925T230000
-RDATE:19940924T230000
-RDATE:19950923T230000
+DTSTART:19160728T000000
+RDATE:19160728T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Goose_Bay.ics b/libical/zoneinfo/America/Goose_Bay.ics
index 9b09af0a9b..cd45753f93 100644
--- a/libical/zoneinfo/America/Goose_Bay.ics
+++ b/libical/zoneinfo/America/Goose_Bay.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Goose_Bay
+TZID:/softwarestudio.org/Olson_20011022_4/America/Goose_Bay
 X-LIC-LOCATION:America/Goose_Bay
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
@@ -19,203 +19,203 @@ DTSTART:19891029T000100
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0402
-TZOFFSETTO:-0331
-TZNAME:NST
-DTSTART:18840101T000000
-RDATE:18840101T000000
+TZOFFSETFROM:-0200
+TZOFFSETTO:-0400
+TZNAME:AST
+DTSTART:19881030T000100
+RDATE:19881030T000100
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0231
-TZNAME:NST
-DTSTART:19170408T020000
-RDATE:19170408T020000
-RDATE:19180414T020000
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0200
+TZNAME:ADDT
+DTSTART:19880403T000100
+RDATE:19880403T000100
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0231
-TZOFFSETTO:-0331
-TZNAME:NST
-DTSTART:19170917T020000
-RDATE:19170917T020000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0331
-TZNAME:NST
-DTSTART:19190101T000000
-RDATE:19190101T000000
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0400
+TZNAME:AST
+DTSTART:19871025T000100
+RDATE:19871025T000100
+RDATE:19861026T020000
+RDATE:19851027T020000
+RDATE:19841028T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19681027T020000
+RDATE:19671029T020000
+RDATE:19661030T020000
 END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0300
+TZNAME:ADT
+DTSTART:19870405T000100
+RDATE:19870405T000100
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0330
-TZNAME:NST
-DTSTART:19350330T000000
-RDATE:19350330T000000
+TZOFFSETFROM:-0330
+TZOFFSETTO:-0400
+TZNAME:AST
+DTSTART:19660315T020000
+RDATE:19660315T020000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0330
+TZOFFSETFROM:-0230
 TZOFFSETTO:-0330
 TZNAME:NST
-DTSTART:19360101T000000
-RDATE:19360101T000000
+DTSTART:19651031T020000
+RDATE:19651031T020000
+RDATE:19641025T020000
+RDATE:19631027T020000
+RDATE:19621028T020000
+RDATE:19611029T020000
+RDATE:19601030T020000
+RDATE:19590927T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19501008T020000
+RDATE:19491002T020000
+RDATE:19481003T020000
+RDATE:19471005T020000
+RDATE:19461006T020000
+RDATE:19451007T020000
+RDATE:19440902T000000
+RDATE:19430905T000000
+RDATE:19421231T000000
+RDATE:19411005T000000
+RDATE:19401006T000000
+RDATE:19391001T000000
+RDATE:19381002T000000
+RDATE:19371003T000000
+RDATE:19361004T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0330
 TZOFFSETTO:-0230
 TZNAME:NDT
-DTSTART:19360510T000000
-RDATE:19360510T000000
-RDATE:19370509T000000
-RDATE:19380508T000000
-RDATE:19390514T000000
-RDATE:19400512T000000
-RDATE:19410511T000000
-RDATE:19460512T020000
-RDATE:19470511T020000
-RDATE:19480509T020000
-RDATE:19490508T020000
-RDATE:19500514T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19610430T020000
-RDATE:19620429T020000
-RDATE:19630428T020000
-RDATE:19640426T020000
+DTSTART:19650425T020000
 RDATE:19650425T020000
+RDATE:19640426T020000
+RDATE:19630428T020000
+RDATE:19620429T020000
+RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500514T020000
+RDATE:19490508T020000
+RDATE:19480509T020000
+RDATE:19470511T020000
+RDATE:19460512T020000
+RDATE:19410511T000000
+RDATE:19400512T000000
+RDATE:19390514T000000
+RDATE:19380508T000000
+RDATE:19370509T000000
+RDATE:19360510T000000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0230
-TZOFFSETTO:-0330
-TZNAME:NST
-DTSTART:19361004T000000
-RDATE:19361004T000000
-RDATE:19371003T000000
-RDATE:19381002T000000
-RDATE:19391001T000000
-RDATE:19401006T000000
-RDATE:19411005T000000
-RDATE:19421231T000000
-RDATE:19430905T000000
-RDATE:19440902T000000
-RDATE:19451007T020000
-RDATE:19461006T020000
-RDATE:19471005T020000
-RDATE:19481003T020000
-RDATE:19491002T020000
-RDATE:19501008T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19590927T020000
-RDATE:19601030T020000
-RDATE:19611029T020000
-RDATE:19621028T020000
-RDATE:19631027T020000
-RDATE:19641025T020000
-RDATE:19651031T020000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0330
 TZOFFSETTO:-0230
 TZNAME:NWT
-DTSTART:19420301T000000
-RDATE:19420301T000000
-RDATE:19430530T000000
-RDATE:19440710T000000
+DTSTART:19450101T000000
 RDATE:19450101T000000
+RDATE:19440710T000000
+RDATE:19430530T000000
+RDATE:19420301T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0330
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19660315T020000
-RDATE:19660315T020000
+TZOFFSETTO:-0330
+TZNAME:NST
+DTSTART:19360101T000000
+RDATE:19360101T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19660424T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-RDATE:19870405T000100
-END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19661030T020000
-RDATE:19661030T020000
-RDATE:19671029T020000
-RDATE:19681027T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
-RDATE:19841028T020000
-RDATE:19851027T020000
-RDATE:19861026T020000
-RDATE:19871025T000100
+TZOFFSETFROM:-0331
+TZOFFSETTO:-0330
+TZNAME:NST
+DTSTART:19350330T000000
+RDATE:19350330T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0331
+TZOFFSETTO:-0331
+TZNAME:NST
+DTSTART:19190101T000000
+RDATE:19190101T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0231
+TZOFFSETTO:-0331
+TZNAME:NST
+DTSTART:19181031T020000
+RDATE:19181031T020000
+RDATE:19170917T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0200
-TZNAME:ADDT
-DTSTART:19880403T000100
-RDATE:19880403T000100
+TZOFFSETFROM:-0331
+TZOFFSETTO:-0231
+TZNAME:NST
+DTSTART:19180414T020000
+RDATE:19180414T020000
+RDATE:19170408T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19881030T000100
-RDATE:19881030T000100
+TZOFFSETFROM:-0402
+TZOFFSETTO:-0331
+TZNAME:NST
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Grand_Turk.ics b/libical/zoneinfo/America/Grand_Turk.ics
index 7c5f01a72a..fbc4f9ed8a 100644
--- a/libical/zoneinfo/America/Grand_Turk.ics
+++ b/libical/zoneinfo/America/Grand_Turk.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Grand_Turk
+TZID:/softwarestudio.org/Olson_20011022_4/America/Grand_Turk
 X-LIC-LOCATION:America/Grand_Turk
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -18,13 +18,20 @@ TZNAME:EDT
 DTSTART:19870405T000000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0445
-TZOFFSETTO:-0507
-TZNAME:KMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19860427T000000
+RDATE:19860427T000000
+RDATE:19850428T000000
+RDATE:19840429T000000
+RDATE:19830424T000000
+RDATE:19820425T000000
+RDATE:19810426T000000
+RDATE:19800427T000000
+RDATE:19790429T000000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0507
 TZOFFSETTO:-0500
@@ -32,19 +39,12 @@ TZNAME:EST
 DTSTART:19120201T000000
 RDATE:19120201T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19790429T000000
-RDATE:19790429T000000
-RDATE:19800427T000000
-RDATE:19810426T000000
-RDATE:19820425T000000
-RDATE:19830424T000000
-RDATE:19840429T000000
-RDATE:19850428T000000
-RDATE:19860427T000000
-END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0445
+TZOFFSETTO:-0507
+TZNAME:KMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Guatemala.ics b/libical/zoneinfo/America/Guatemala.ics
index e884163c82..318c17f562 100644
--- a/libical/zoneinfo/America/Guatemala.ics
+++ b/libical/zoneinfo/America/Guatemala.ics
@@ -2,32 +2,32 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Guatemala
+TZID:/softwarestudio.org/Olson_20011022_4/America/Guatemala
 X-LIC-LOCATION:America/Guatemala
 BEGIN:STANDARD
-TZOFFSETFROM:-0602
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181005T000000
-RDATE:19181005T000000
+DTSTART:19910907T000000
+RDATE:19910907T000000
+RDATE:19830922T000000
+RDATE:19740224T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19731125T000000
-RDATE:19731125T000000
-RDATE:19830521T000000
+DTSTART:19910323T000000
 RDATE:19910323T000000
+RDATE:19830521T000000
+RDATE:19731125T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0602
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19740224T000000
-RDATE:19740224T000000
-RDATE:19830922T000000
-RDATE:19910907T000000
+DTSTART:19181005T000000
+RDATE:19181005T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Guayaquil.ics b/libical/zoneinfo/America/Guayaquil.ics
index 2200e0d9ad..13b84858f1 100644
--- a/libical/zoneinfo/America/Guayaquil.ics
+++ b/libical/zoneinfo/America/Guayaquil.ics
@@ -2,21 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Guayaquil
+TZID:/softwarestudio.org/Olson_20011022_4/America/Guayaquil
 X-LIC-LOCATION:America/Guayaquil
 BEGIN:STANDARD
-TZOFFSETFROM:-0519
-TZOFFSETTO:-0514
-TZNAME:QMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0514
 TZOFFSETTO:-0500
 TZNAME:ECT
 DTSTART:19310101T000000
 RDATE:19310101T000000
 END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0519
+TZOFFSETTO:-0514
+TZNAME:QMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Guyana.ics b/libical/zoneinfo/America/Guyana.ics
index d78a89b2b5..012dfd96bd 100644
--- a/libical/zoneinfo/America/Guyana.ics
+++ b/libical/zoneinfo/America/Guyana.ics
@@ -2,21 +2,14 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Guyana
+TZID:/softwarestudio.org/Olson_20011022_4/America/Guyana
 X-LIC-LOCATION:America/Guyana
 BEGIN:STANDARD
-TZOFFSETFROM:-0353
-TZOFFSETTO:-0345
-TZNAME:GBGT
-DTSTART:19150301T000000
-RDATE:19150301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0345
-TZOFFSETTO:-0345
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0400
 TZNAME:GYT
-DTSTART:19660526T000000
-RDATE:19660526T000000
+DTSTART:19910101T000000
+RDATE:19910101T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0345
@@ -26,11 +19,18 @@ DTSTART:19750731T000000
 RDATE:19750731T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0345
+TZOFFSETTO:-0345
 TZNAME:GYT
-DTSTART:19910101T000000
-RDATE:19910101T000000
+DTSTART:19660526T000000
+RDATE:19660526T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0353
+TZOFFSETTO:-0345
+TZNAME:GBGT
+DTSTART:19150301T000000
+RDATE:19150301T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Halifax.ics b/libical/zoneinfo/America/Halifax.ics
index 825bbbf0a4..4c00833b66 100644
--- a/libical/zoneinfo/America/Halifax.ics
+++ b/libical/zoneinfo/America/Halifax.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Halifax
+TZID:/softwarestudio.org/Olson_20011022_4/America/Halifax
 X-LIC-LOCATION:America/Halifax
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
@@ -18,131 +18,117 @@ TZNAME:ADT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0414
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19020615T000000
-RDATE:19020615T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ADT
-DTSTART:19160401T000000
-RDATE:19160401T000000
-RDATE:19180414T020000
-RDATE:19200509T000000
-RDATE:19210506T000000
-RDATE:19220430T000000
-RDATE:19230506T000000
-RDATE:19240504T000000
-RDATE:19250503T000000
-RDATE:19260516T000000
-RDATE:19270501T000000
-RDATE:19280513T000000
-RDATE:19290512T000000
-RDATE:19300511T000000
-RDATE:19310510T000000
-RDATE:19330430T000000
-RDATE:19340520T000000
-RDATE:19350602T000000
-RDATE:19360601T000000
-RDATE:19370502T000000
-RDATE:19380501T000000
-RDATE:19390528T000000
-RDATE:19400505T000000
-RDATE:19410504T000000
-RDATE:19460428T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19620429T020000
-RDATE:19630428T020000
-RDATE:19640426T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19640426T020000
+RDATE:19630428T020000
+RDATE:19620429T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460428T020000
+RDATE:19410504T000000
+RDATE:19400505T000000
+RDATE:19390528T000000
+RDATE:19380501T000000
+RDATE:19370502T000000
+RDATE:19360601T000000
+RDATE:19350602T000000
+RDATE:19340520T000000
+RDATE:19330430T000000
+RDATE:19310510T000000
+RDATE:19300511T000000
+RDATE:19290512T000000
+RDATE:19280513T000000
+RDATE:19270501T000000
+RDATE:19260516T000000
+RDATE:19250503T000000
+RDATE:19240504T000000
+RDATE:19230506T000000
+RDATE:19220430T000000
+RDATE:19210506T000000
+RDATE:19200509T000000
+RDATE:19180414T020000
+RDATE:19160401T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19161001T000000
-RDATE:19161001T000000
-RDATE:19181031T020000
-RDATE:19200829T000000
-RDATE:19210905T000000
-RDATE:19220905T000000
-RDATE:19230904T000000
-RDATE:19240915T000000
-RDATE:19250928T000000
-RDATE:19260913T000000
-RDATE:19270926T000000
-RDATE:19280909T000000
-RDATE:19290903T000000
-RDATE:19300915T000000
-RDATE:19310928T000000
-RDATE:19331002T000000
-RDATE:19340916T000000
-RDATE:19350930T000000
-RDATE:19360914T000000
-RDATE:19370927T000000
-RDATE:19380926T000000
-RDATE:19390925T000000
-RDATE:19400930T000000
-RDATE:19410929T000000
-RDATE:19450930T020000
-RDATE:19460929T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
+DTSTART:19590927T020000
 RDATE:19590927T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19320926T000000
-RDATE:19320926T000000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19460929T020000
+RDATE:19450930T020000
+RDATE:19410929T000000
+RDATE:19400930T000000
+RDATE:19390925T000000
+RDATE:19380926T000000
+RDATE:19370927T000000
+RDATE:19360914T000000
+RDATE:19350930T000000
+RDATE:19340916T000000
+RDATE:19331002T000000
+RDATE:19310928T000000
+RDATE:19300915T000000
+RDATE:19290903T000000
+RDATE:19280909T000000
+RDATE:19270926T000000
+RDATE:19260913T000000
+RDATE:19250928T000000
+RDATE:19240915T000000
+RDATE:19230904T000000
+RDATE:19220905T000000
+RDATE:19210905T000000
+RDATE:19200829T000000
+RDATE:19181031T020000
+RDATE:19161001T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
@@ -151,5 +137,19 @@ TZNAME:AWT
 DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0400
+TZNAME:AST
+DTSTART:19320926T000000
+RDATE:19320926T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0414
+TZOFFSETTO:-0400
+TZNAME:AST
+DTSTART:19020615T000000
+RDATE:19020615T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Havana.ics b/libical/zoneinfo/America/Havana.ics
index f23b3a2c9a..38307e62cd 100644
--- a/libical/zoneinfo/America/Havana.ics
+++ b/libical/zoneinfo/America/Havana.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Havana
+TZID:/softwarestudio.org/Olson_20011022_4/America/Havana
 X-LIC-LOCATION:America/Havana
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -18,111 +18,111 @@ TZNAME:CDT
 DTSTART:20000402T000000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0529
-TZOFFSETTO:-0530
-TZNAME:HMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0530
-TZOFFSETTO:-0500
-TZNAME:CST
-DTSTART:19250719T120000
-RDATE:19250719T120000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:CDT
-DTSTART:19280610T000000
-RDATE:19280610T000000
-RDATE:19400602T000000
-RDATE:19410601T000000
-RDATE:19420607T000000
-RDATE:19450603T000000
-RDATE:19460602T000000
-RDATE:19650601T000000
-RDATE:19660529T000000
-RDATE:19670408T000000
-RDATE:19680414T000000
-RDATE:19690427T000000
-RDATE:19700426T000000
-RDATE:19710425T000000
-RDATE:19720430T000000
-RDATE:19730429T000000
-RDATE:19740428T000000
-RDATE:19750427T000000
-RDATE:19760425T000000
-RDATE:19770424T000000
-RDATE:19780507T000000
-RDATE:19790318T000000
-RDATE:19800316T000000
-RDATE:19810510T000000
-RDATE:19820509T000000
-RDATE:19830508T000000
-RDATE:19840506T000000
-RDATE:19850505T000000
-RDATE:19860316T000000
-RDATE:19870315T000000
-RDATE:19880320T000000
-RDATE:19890319T000000
-RDATE:19900401T000000
-RDATE:19910407T000000
-RDATE:19920405T000000
-RDATE:19930404T000000
-RDATE:19940403T000000
-RDATE:19950402T000000
-RDATE:19960407T000000
-RDATE:19970406T000000
-RDATE:19980329T000000
+DTSTART:19990328T000000
 RDATE:19990328T000000
+RDATE:19980329T000000
+RDATE:19970406T000000
+RDATE:19960407T000000
+RDATE:19950402T000000
+RDATE:19940403T000000
+RDATE:19930404T000000
+RDATE:19920405T000000
+RDATE:19910407T000000
+RDATE:19900401T000000
+RDATE:19890319T000000
+RDATE:19880320T000000
+RDATE:19870315T000000
+RDATE:19860316T000000
+RDATE:19850505T000000
+RDATE:19840506T000000
+RDATE:19830508T000000
+RDATE:19820509T000000
+RDATE:19810510T000000
+RDATE:19800316T000000
+RDATE:19790318T000000
+RDATE:19780507T000000
+RDATE:19770424T000000
+RDATE:19760425T000000
+RDATE:19750427T000000
+RDATE:19740428T000000
+RDATE:19730429T000000
+RDATE:19720430T000000
+RDATE:19710425T000000
+RDATE:19700426T000000
+RDATE:19690427T000000
+RDATE:19680414T000000
+RDATE:19670408T000000
+RDATE:19660529T000000
+RDATE:19650601T000000
+RDATE:19460602T000000
+RDATE:19450603T000000
+RDATE:19420607T000000
+RDATE:19410601T000000
+RDATE:19400602T000000
+RDATE:19280610T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:CST
-DTSTART:19281010T000000
-RDATE:19281010T000000
-RDATE:19400901T000000
-RDATE:19410907T000000
-RDATE:19420906T000000
-RDATE:19450902T000000
-RDATE:19460901T000000
-RDATE:19650930T000000
-RDATE:19661002T000000
-RDATE:19670910T000000
-RDATE:19680908T000000
-RDATE:19691026T000000
-RDATE:19701025T000000
-RDATE:19711031T000000
-RDATE:19721008T000000
-RDATE:19731008T000000
-RDATE:19741008T000000
-RDATE:19751026T000000
-RDATE:19761031T000000
-RDATE:19771030T000000
-RDATE:19781008T000000
-RDATE:19791014T000000
-RDATE:19801012T000000
-RDATE:19811011T000000
-RDATE:19821010T000000
-RDATE:19831009T000000
-RDATE:19841014T000000
-RDATE:19851013T000000
-RDATE:19861012T000000
-RDATE:19871011T000000
-RDATE:19881009T000000
-RDATE:19891008T000000
-RDATE:19901014T000000
-RDATE:19911013T010000
-RDATE:19921011T010000
-RDATE:19931010T010000
-RDATE:19941009T010000
-RDATE:19951008T010000
-RDATE:19961006T010000
+DTSTART:19971012T010000
 RDATE:19971012T010000
+RDATE:19961006T010000
+RDATE:19951008T010000
+RDATE:19941009T010000
+RDATE:19931010T010000
+RDATE:19921011T010000
+RDATE:19911013T010000
+RDATE:19901014T000000
+RDATE:19891008T000000
+RDATE:19881009T000000
+RDATE:19871011T000000
+RDATE:19861012T000000
+RDATE:19851013T000000
+RDATE:19841014T000000
+RDATE:19831009T000000
+RDATE:19821010T000000
+RDATE:19811011T000000
+RDATE:19801012T000000
+RDATE:19791014T000000
+RDATE:19781008T000000
+RDATE:19771030T000000
+RDATE:19761031T000000
+RDATE:19751026T000000
+RDATE:19741008T000000
+RDATE:19731008T000000
+RDATE:19721008T000000
+RDATE:19711031T000000
+RDATE:19701025T000000
+RDATE:19691026T000000
+RDATE:19680908T000000
+RDATE:19670910T000000
+RDATE:19661002T000000
+RDATE:19650930T000000
+RDATE:19460901T000000
+RDATE:19450902T000000
+RDATE:19420906T000000
+RDATE:19410907T000000
+RDATE:19400901T000000
+RDATE:19281010T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0530
+TZOFFSETTO:-0500
+TZNAME:CST
+DTSTART:19250719T120000
+RDATE:19250719T120000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0529
+TZOFFSETTO:-0530
+TZNAME:HMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Hermosillo.ics b/libical/zoneinfo/America/Hermosillo.ics
index c3e67d82a3..a4797af09c 100644
--- a/libical/zoneinfo/America/Hermosillo.ics
+++ b/libical/zoneinfo/America/Hermosillo.ics
@@ -2,35 +2,42 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Hermosillo
+TZID:/softwarestudio.org/Olson_20011022_4/America/Hermosillo
 X-LIC-LOCATION:America/Hermosillo
 BEGIN:STANDARD
-TZOFFSETFROM:-0724
+TZOFFSETFROM:-0700
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19211231T233608
-RDATE:19211231T233608
+DTSTART:19990101T000000
+RDATE:19990101T000000
 END:STANDARD
 BEGIN:STANDARD
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19981025T020000
+RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19420424T000000
+RDATE:19311001T000000
+RDATE:19301115T000000
+END:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19270610T230000
-RDATE:19270610T230000
-RDATE:19310501T230000
-RDATE:19320401T000000
-END:STANDARD
+TZNAME:MDT
+DTSTART:19980405T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19301115T000000
-RDATE:19301115T000000
-RDATE:19311001T000000
-RDATE:19420424T000000
-RDATE:19961027T020000
-RDATE:19971026T020000
-RDATE:19981025T020000
+DTSTART:19700101T000000
+RDATE:19700101T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
@@ -40,27 +47,20 @@ DTSTART:19490114T000000
 RDATE:19490114T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19700101T000000
-RDATE:19700101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19960407T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
-END:DAYLIGHT
+TZNAME:CST
+DTSTART:19320401T000000
+RDATE:19320401T000000
+RDATE:19310501T230000
+RDATE:19270610T230000
+END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
+TZOFFSETFROM:-0724
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19990101T000000
-RDATE:19990101T000000
+DTSTART:19211231T233608
+RDATE:19211231T233608
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indiana/Indianapolis.ics b/libical/zoneinfo/America/Indiana/Indianapolis.ics
index 8dc82b603a..15450235b1 100644
--- a/libical/zoneinfo/America/Indiana/Indianapolis.ics
+++ b/libical/zoneinfo/America/Indiana/Indianapolis.ics
@@ -2,107 +2,107 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Indiana/Indianapolis
+TZID:/softwarestudio.org/Olson_20011022_4/America/Indiana/Indianapolis
 X-LIC-LOCATION:America/Indiana/Indianapolis
 BEGIN:STANDARD
-TZOFFSETFROM:-0545
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19710101T000000
+RDATE:19710101T000000
+RDATE:19690101T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19701025T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
 END:STANDARD
 BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19700426T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+END:DAYLIGHT
+BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19410622T020000
-RDATE:19460428T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-END:DAYLIGHT
+TZNAME:EST
+DTSTART:19580427T020000
+RDATE:19580427T020000
+RDATE:19550424T020000
+END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19410928T020000
-RDATE:19450930T020000
-RDATE:19460929T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
+DTSTART:19570929T020000
 RDATE:19570929T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19460929T020000
+RDATE:19450930T020000
+RDATE:19410928T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:19540425T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460428T020000
+RDATE:19410622T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19200101T000000
-RDATE:19200101T000000
-RDATE:19420101T000000
+DTSTART:19460101T000000
 RDATE:19460101T000000
+RDATE:19420101T000000
+RDATE:19200101T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:CPT
 DTSTART:19450814T180000
 RDATE:19450814T180000
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19550424T020000
-RDATE:19550424T020000
-RDATE:19580427T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19690101T000000
-RDATE:19690101T000000
-RDATE:19710101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19690427T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19691026T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
+TZOFFSETFROM:-0545
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indiana/Knox.ics b/libical/zoneinfo/America/Indiana/Knox.ics
index 7351eb3b1a..a31bfdbefc 100644
--- a/libical/zoneinfo/America/Indiana/Knox.ics
+++ b/libical/zoneinfo/America/Indiana/Knox.ics
@@ -2,126 +2,119 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Indiana/Knox
+TZID:/softwarestudio.org/Olson_20011022_4/America/Indiana/Knox
 X-LIC-LOCATION:America/Indiana/Knox
 BEGIN:STANDARD
-TZOFFSETFROM:-0546
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19911027T020000
+RDATE:19911027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19610430T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-RDATE:19870405T020000
-RDATE:19880403T020000
-RDATE:19890402T020000
-RDATE:19900401T020000
+DTSTART:19910407T020000
 RDATE:19910407T020000
+RDATE:19900401T020000
+RDATE:19890402T020000
+RDATE:19880403T020000
+RDATE:19870405T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19450930T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19551030T020000
-RDATE:19561028T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19591025T020000
-RDATE:19601030T020000
-RDATE:19611029T020000
-RDATE:19631027T020000
-RDATE:19671029T020000
-RDATE:19681027T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
-RDATE:19841028T020000
-RDATE:19851027T020000
-RDATE:19861026T020000
-RDATE:19871025T020000
-RDATE:19881030T020000
-RDATE:19891029T020000
+DTSTART:19901028T020000
 RDATE:19901028T020000
+RDATE:19891029T020000
+RDATE:19881030T020000
+RDATE:19871025T020000
+RDATE:19861026T020000
+RDATE:19851027T020000
+RDATE:19841028T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19681027T020000
+RDATE:19671029T020000
+RDATE:19631027T020000
+RDATE:19611029T020000
+RDATE:19601030T020000
+RDATE:19591025T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19561028T020000
+RDATE:19551030T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19450930T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
-BEGIN:DAYLIGHT
+BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
+TZNAME:EST
+DTSTART:19620429T020000
+RDATE:19620429T020000
+END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
@@ -129,19 +122,26 @@ TZNAME:CST
 DTSTART:19470101T000000
 RDATE:19470101T000000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:CPT
+DTSTART:19450814T180000
+RDATE:19450814T180000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19620429T020000
-RDATE:19620429T020000
-END:STANDARD
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19911027T020000
-RDATE:19911027T020000
+TZOFFSETFROM:-0546
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indiana/Marengo.ics b/libical/zoneinfo/America/Indiana/Marengo.ics
index 88dbdb5314..1642fd9887 100644
--- a/libical/zoneinfo/America/Indiana/Marengo.ics
+++ b/libical/zoneinfo/America/Indiana/Marengo.ics
@@ -2,61 +2,87 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Indiana/Marengo
+TZID:/softwarestudio.org/Olson_20011022_4/America/Indiana/Marengo
 X-LIC-LOCATION:America/Indiana/Marengo
 BEGIN:STANDARD
-TZOFFSETFROM:-0545
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19760101T000000
+RDATE:19760101T000000
+RDATE:19741027T020000
+RDATE:19690101T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19751026T020000
+RDATE:19751026T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19750223T020000
+RDATE:19750223T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19510429T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
+DTSTART:19740106T020000
+RDATE:19740106T020000
 END:DAYLIGHT
 BEGIN:STANDARD
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19610430T020000
+RDATE:19610430T020000
+END:STANDARD
+BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19450930T020000
-RDATE:19510930T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19590927T020000
+DTSTART:19600925T020000
 RDATE:19600925T020000
+RDATE:19590927T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19510930T020000
+RDATE:19450930T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
+TZNAME:CDT
+DTSTART:19600424T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19510429T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
@@ -65,52 +91,26 @@ TZNAME:CST
 DTSTART:19510101T000000
 RDATE:19510101T000000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19610430T020000
-RDATE:19610430T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19690101T000000
-RDATE:19690101T000000
-RDATE:19741027T020000
-RDATE:19760101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19690427T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19750223T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19691026T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19751026T020000
-END:STANDARD
+TZNAME:CPT
+DTSTART:19450814T180000
+RDATE:19450814T180000
+END:DAYLIGHT
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19740106T020000
-RDATE:19740106T020000
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0545
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18831118T120000
+RDATE:18831118T120000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indiana/Vevay.ics b/libical/zoneinfo/America/Indiana/Vevay.ics
index 721c5d5d1b..92cd49b49c 100644
--- a/libical/zoneinfo/America/Indiana/Vevay.ics
+++ b/libical/zoneinfo/America/Indiana/Vevay.ics
@@ -2,80 +2,80 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Indiana/Vevay
+TZID:/softwarestudio.org/Olson_20011022_4/America/Indiana/Vevay
 X-LIC-LOCATION:America/Indiana/Vevay
 BEGIN:STANDARD
-TZOFFSETFROM:-0540
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19730101T000000
+RDATE:19730101T000000
+RDATE:19690101T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19721029T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
 END:STANDARD
 BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19720430T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+END:DAYLIGHT
+BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-END:DAYLIGHT
+TZNAME:EST
+DTSTART:19540425T020000
+RDATE:19540425T020000
+END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
+DTSTART:19450930T020000
 RDATE:19450930T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:CPT
 DTSTART:19450814T180000
 RDATE:19450814T180000
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19540425T020000
-RDATE:19540425T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19690101T000000
-RDATE:19690101T000000
-RDATE:19730101T000000
-END:STANDARD
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19690427T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:19190330T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19691026T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
+TZOFFSETFROM:-0540
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indianapolis.ics b/libical/zoneinfo/America/Indianapolis.ics
index 649dddbfec..aefcc4846e 100644
--- a/libical/zoneinfo/America/Indianapolis.ics
+++ b/libical/zoneinfo/America/Indianapolis.ics
@@ -2,107 +2,107 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Indianapolis
+TZID:/softwarestudio.org/Olson_20011022_4/America/Indianapolis
 X-LIC-LOCATION:America/Indianapolis
 BEGIN:STANDARD
-TZOFFSETFROM:-0545
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19710101T000000
+RDATE:19710101T000000
+RDATE:19690101T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19701025T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
 END:STANDARD
 BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19700426T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+END:DAYLIGHT
+BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19410622T020000
-RDATE:19460428T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-END:DAYLIGHT
+TZNAME:EST
+DTSTART:19580427T020000
+RDATE:19580427T020000
+RDATE:19550424T020000
+END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19410928T020000
-RDATE:19450930T020000
-RDATE:19460929T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
+DTSTART:19570929T020000
 RDATE:19570929T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19460929T020000
+RDATE:19450930T020000
+RDATE:19410928T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:19540425T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460428T020000
+RDATE:19410622T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19200101T000000
-RDATE:19200101T000000
-RDATE:19420101T000000
+DTSTART:19460101T000000
 RDATE:19460101T000000
+RDATE:19420101T000000
+RDATE:19200101T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:CPT
 DTSTART:19450814T180000
 RDATE:19450814T180000
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19550424T020000
-RDATE:19550424T020000
-RDATE:19580427T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19690101T000000
-RDATE:19690101T000000
-RDATE:19710101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19690427T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19691026T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
+TZOFFSETFROM:-0545
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Inuvik.ics b/libical/zoneinfo/America/Inuvik.ics
index 308a875b38..667a93a05b 100644
--- a/libical/zoneinfo/America/Inuvik.ics
+++ b/libical/zoneinfo/America/Inuvik.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Inuvik
+TZID:/softwarestudio.org/Olson_20011022_4/America/Inuvik
 X-LIC-LOCATION:America/Inuvik
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
@@ -18,29 +18,48 @@ TZNAME:MDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0600
+TZNAME:MDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0854
+TZOFFSETFROM:-0800
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19790429T020000
+RDATE:19790429T020000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:18840101T000000
-RDATE:18840101T000000
+DTSTART:19651031T020000
+RDATE:19651031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19190525T020000
+TZOFFSETTO:-0600
+TZNAME:PDDT
+DTSTART:19650425T000000
+RDATE:19650425T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191101T000000
+DTSTART:19450930T020000
 RDATE:19450930T020000
+RDATE:19191101T000000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
@@ -51,37 +70,18 @@ RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
-TZOFFSETTO:-0600
-TZNAME:PDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
+TZOFFSETTO:-0700
+TZNAME:PDT
+DTSTART:19190525T020000
+RDATE:19190525T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0854
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19790429T020000
-RDATE:19790429T020000
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19800427T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Iqaluit.ics b/libical/zoneinfo/America/Iqaluit.ics
index 6e50a683f0..241903ce93 100644
--- a/libical/zoneinfo/America/Iqaluit.ics
+++ b/libical/zoneinfo/America/Iqaluit.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Iqaluit
+TZID:/softwarestudio.org/Olson_20011022_4/America/Iqaluit
 X-LIC-LOCATION:America/Iqaluit
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
@@ -19,82 +19,82 @@ DTSTART:20011028T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0434
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:18840101T000000
-RDATE:18840101T000000
+DTSTART:20001029T020000
+RDATE:20001029T020000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:20000402T020000
+RDATE:20000402T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19991031T020000
+RDATE:19991031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19190525T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-RDATE:19870405T020000
-RDATE:19880403T020000
-RDATE:19890402T020000
-RDATE:19900401T020000
-RDATE:19910407T020000
-RDATE:19920405T020000
-RDATE:19930404T020000
-RDATE:19940403T020000
-RDATE:19950402T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
+DTSTART:19990404T020000
 RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+RDATE:19950402T020000
+RDATE:19940403T020000
+RDATE:19930404T020000
+RDATE:19920405T020000
+RDATE:19910407T020000
+RDATE:19900401T020000
+RDATE:19890402T020000
+RDATE:19880403T020000
+RDATE:19870405T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19190525T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191101T000000
-RDATE:19450930T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
-RDATE:19841028T020000
-RDATE:19851027T020000
-RDATE:19861026T020000
-RDATE:19871025T020000
-RDATE:19881030T020000
-RDATE:19891029T020000
-RDATE:19901028T020000
-RDATE:19911027T020000
-RDATE:19921025T020000
-RDATE:19931031T020000
-RDATE:19941030T020000
-RDATE:19951029T020000
-RDATE:19961027T020000
-RDATE:19971026T020000
+DTSTART:19981025T020000
 RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19951029T020000
+RDATE:19941030T020000
+RDATE:19931031T020000
+RDATE:19921025T020000
+RDATE:19911027T020000
+RDATE:19901028T020000
+RDATE:19891029T020000
+RDATE:19881030T020000
+RDATE:19871025T020000
+RDATE:19861026T020000
+RDATE:19851027T020000
+RDATE:19841028T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19450930T020000
+RDATE:19191101T000000
+RDATE:19181027T020000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0300
-TZNAME:EDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0500
@@ -102,26 +102,26 @@ TZNAME:EST
 DTSTART:19651031T020000
 RDATE:19651031T020000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19991031T020000
-RDATE:19991031T020000
-END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0300
+TZNAME:EDDT
+DTSTART:19650425T000000
+RDATE:19650425T000000
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0434
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Jamaica.ics b/libical/zoneinfo/America/Jamaica.ics
index 6588151af4..9b547e54d6 100644
--- a/libical/zoneinfo/America/Jamaica.ics
+++ b/libical/zoneinfo/America/Jamaica.ics
@@ -2,60 +2,60 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Jamaica
+TZID:/softwarestudio.org/Olson_20011022_4/America/Jamaica
 X-LIC-LOCATION:America/Jamaica
 BEGIN:STANDARD
-TZOFFSETFROM:-0507
-TZOFFSETTO:-0507
-TZNAME:KMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0507
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19120201T000000
-RDATE:19120201T000000
+DTSTART:19840101T000000
+RDATE:19840101T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19740428T020000
-RDATE:19740428T020000
+DTSTART:19831030T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
 RDATE:19741027T020000
-RDATE:19840101T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19750223T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
+DTSTART:19830424T020000
 RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740428T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0507
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19751026T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
+DTSTART:19120201T000000
+RDATE:19120201T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0507
+TZOFFSETTO:-0507
+TZNAME:KMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Jujuy.ics b/libical/zoneinfo/America/Jujuy.ics
index 823f0f087e..8ef643555f 100644
--- a/libical/zoneinfo/America/Jujuy.ics
+++ b/libical/zoneinfo/America/Jujuy.ics
@@ -2,147 +2,147 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Jujuy
+TZID:/softwarestudio.org/Olson_20011022_4/America/Jujuy
 X-LIC-LOCATION:America/Jujuy
 BEGIN:STANDARD
-TZOFFSETFROM:-0421
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
+DTSTART:20000303T000000
+RDATE:20000303T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19301201T000000
-RDATE:19301201T000000
-RDATE:19311015T000000
-RDATE:19321101T000000
-RDATE:19331101T000000
-RDATE:19341101T000000
-RDATE:19351101T000000
-RDATE:19361101T000000
-RDATE:19371101T000000
-RDATE:19381101T000000
-RDATE:19391101T000000
-RDATE:19400701T000000
-RDATE:19411015T000000
-RDATE:19431015T000000
-RDATE:19461001T000000
-RDATE:19631215T000000
-RDATE:19641015T000000
-RDATE:19651015T000000
-RDATE:19661015T000000
-RDATE:19671001T000000
-RDATE:19681006T000000
+DTSTART:19991003T000000
+RDATE:19991003T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19310401T000000
-RDATE:19310401T000000
-RDATE:19320301T000000
-RDATE:19330301T000000
-RDATE:19340301T000000
-RDATE:19350301T000000
-RDATE:19360301T000000
-RDATE:19370301T000000
-RDATE:19380301T000000
-RDATE:19390301T000000
-RDATE:19400301T000000
-RDATE:19410615T000000
-RDATE:19430801T000000
-RDATE:19460301T000000
-RDATE:19631001T000000
-RDATE:19640301T000000
-RDATE:19650301T000000
-RDATE:19660301T000000
-RDATE:19670401T000000
-RDATE:19680407T000000
-RDATE:19690406T000000
+DTSTART:19921018T000000
+RDATE:19921018T000000
+RDATE:19691005T000000
 END:STANDARD
 BEGIN:STANDARD
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0400
+TZNAME:WART
+DTSTART:19920315T000000
+RDATE:19920315T000000
+END:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
-RDATE:19921018T000000
+TZNAME:WARST
+DTSTART:19911006T000000
+RDATE:19911006T000000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0200
+TZOFFSETTO:-0400
+TZNAME:WART
+DTSTART:19910303T000000
+RDATE:19910303T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:ARST
-DTSTART:19740123T000000
-RDATE:19740123T000000
-RDATE:19741006T000000
-RDATE:19751005T000000
-RDATE:19761003T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881201T000000
-RDATE:19891015T000000
+DTSTART:19901021T000000
 RDATE:19901021T000000
+RDATE:19891015T000000
+RDATE:19881201T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19761003T000000
+RDATE:19751005T000000
+RDATE:19741006T000000
+RDATE:19740123T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19740501T000000
-RDATE:19740501T000000
-RDATE:19750406T000000
-RDATE:19760404T000000
-RDATE:19770403T000000
-RDATE:19860314T000000
-RDATE:19870213T000000
-RDATE:19880207T000000
-RDATE:19890305T000000
+DTSTART:19900304T000000
 RDATE:19900304T000000
+RDATE:19890305T000000
+RDATE:19880207T000000
+RDATE:19870213T000000
+RDATE:19860314T000000
+RDATE:19770403T000000
+RDATE:19760404T000000
+RDATE:19750406T000000
+RDATE:19740501T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
-TZNAME:WART
-DTSTART:19910303T000000
-RDATE:19910303T000000
+TZNAME:ART
+DTSTART:19690406T000000
+RDATE:19690406T000000
+RDATE:19680407T000000
+RDATE:19670401T000000
+RDATE:19660301T000000
+RDATE:19650301T000000
+RDATE:19640301T000000
+RDATE:19631001T000000
+RDATE:19460301T000000
+RDATE:19430801T000000
+RDATE:19410615T000000
+RDATE:19400301T000000
+RDATE:19390301T000000
+RDATE:19380301T000000
+RDATE:19370301T000000
+RDATE:19360301T000000
+RDATE:19350301T000000
+RDATE:19340301T000000
+RDATE:19330301T000000
+RDATE:19320301T000000
+RDATE:19310401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
-TZNAME:WARST
-DTSTART:19911006T000000
-RDATE:19911006T000000
+TZNAME:ARST
+DTSTART:19681006T000000
+RDATE:19681006T000000
+RDATE:19671001T000000
+RDATE:19661015T000000
+RDATE:19651015T000000
+RDATE:19641015T000000
+RDATE:19631215T000000
+RDATE:19461001T000000
+RDATE:19431015T000000
+RDATE:19411015T000000
+RDATE:19400701T000000
+RDATE:19391101T000000
+RDATE:19381101T000000
+RDATE:19371101T000000
+RDATE:19361101T000000
+RDATE:19351101T000000
+RDATE:19341101T000000
+RDATE:19331101T000000
+RDATE:19321101T000000
+RDATE:19311015T000000
+RDATE:19301201T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0417
 TZOFFSETTO:-0400
-TZNAME:WART
-DTSTART:19920315T000000
-RDATE:19920315T000000
+TZNAME:ART
+DTSTART:19200501T000000
+RDATE:19200501T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:20000303T000000
-RDATE:20000303T000000
+TZOFFSETFROM:-0421
+TZOFFSETTO:-0417
+TZNAME:CMT
+DTSTART:18941101T000000
+RDATE:18941101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Juneau.ics b/libical/zoneinfo/America/Juneau.ics
index 4724bcb77a..00f944fad8 100644
--- a/libical/zoneinfo/America/Juneau.ics
+++ b/libical/zoneinfo/America/Juneau.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Juneau
+TZID:/softwarestudio.org/Olson_20011022_4/America/Juneau
 X-LIC-LOCATION:America/Juneau
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
@@ -18,100 +18,100 @@ TZNAME:AKDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0900
+TZOFFSETTO:-0800
+TZNAME:AKDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:+1502
-TZOFFSETTO:-0858
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0900
+TZNAME:AKST
+DTSTART:19831030T020000
+RDATE:19831030T020000
 END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0800
+TZOFFSETTO:-0700
+TZNAME:PDT
+DTSTART:19830424T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0858
+TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19000820T120000
-RDATE:19000820T120000
+DTSTART:19821031T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19450930T020000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19420101T000000
-RDATE:19420101T000000
-RDATE:19460101T000000
+DTSTART:19690101T000000
 RDATE:19690101T000000
+RDATE:19460101T000000
+RDATE:19420101T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0700
 TZNAME:PPT
 DTSTART:19450814T160000
 RDATE:19450814T160000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19690427T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
+TZNAME:PWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0900
-TZNAME:AKST
-DTSTART:19831030T020000
-RDATE:19831030T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
+TZOFFSETFROM:-0858
 TZOFFSETTO:-0800
-TZNAME:AKDT
-DTSTART:19840429T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
+TZNAME:PST
+DTSTART:19000820T120000
+RDATE:19000820T120000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:+1502
+TZOFFSETTO:-0858
+TZNAME:LMT
+DTSTART:18671018T000000
+RDATE:18671018T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Kentucky/Louisville.ics b/libical/zoneinfo/America/Kentucky/Louisville.ics
index 0ffdcc655f..c0c16bc8fe 100644
--- a/libical/zoneinfo/America/Kentucky/Louisville.ics
+++ b/libical/zoneinfo/America/Kentucky/Louisville.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Kentucky/Louisville
+TZID:/softwarestudio.org/Olson_20011022_4/America/Kentucky/Louisville
 X-LIC-LOCATION:America/Kentucky/Louisville
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -18,75 +18,108 @@ TZNAME:EDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0543
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19741027T020000
+RDATE:19741027T020000
+RDATE:19680101T000000
+RDATE:19610723T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19210501T020000
-RDATE:19410427T020000
+DTSTART:19740106T020000
+RDATE:19740106T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
 RDATE:19460428T020000
-RDATE:19470427T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19731028T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19681027T020000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:19610430T020000
 RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19470427T020000
+RDATE:19460101T000000
+RDATE:19410427T020000
+RDATE:19210501T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19210901T020000
-RDATE:19410928T020000
-RDATE:19450930T020000
-RDATE:19460602T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19561028T020000
-RDATE:19571027T020000
-RDATE:19581026T020000
-RDATE:19591025T020000
+DTSTART:19601030T020000
 RDATE:19601030T020000
+RDATE:19591025T020000
+RDATE:19581026T020000
+RDATE:19571027T020000
+RDATE:19561028T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19460602T020000
+RDATE:19450930T020000
+RDATE:19410928T020000
+RDATE:19210901T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19210101T000000
-RDATE:19210101T000000
-RDATE:19420101T000000
-RDATE:19460101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
@@ -95,59 +128,26 @@ DTSTART:19450814T180000
 RDATE:19450814T180000
 END:DAYLIGHT
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19480425T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19740106T020000
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19610723T020000
-RDATE:19610723T020000
-RDATE:19680101T000000
-RDATE:19741027T020000
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19420101T000000
+RDATE:19420101T000000
+RDATE:19210101T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19680428T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19681027T020000
-RDATE:19681027T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
+TZOFFSETFROM:-0543
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Kentucky/Monticello.ics b/libical/zoneinfo/America/Kentucky/Monticello.ics
index c2f49e9b63..c517b46c7f 100644
--- a/libical/zoneinfo/America/Kentucky/Monticello.ics
+++ b/libical/zoneinfo/America/Kentucky/Monticello.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Kentucky/Monticello
+TZID:/softwarestudio.org/Olson_20011022_4/America/Kentucky/Monticello
 X-LIC-LOCATION:America/Kentucky/Monticello
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
@@ -19,101 +19,102 @@ DTSTART:20011028T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0539
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:20001029T020000
+RDATE:20001029T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-RDATE:19870405T020000
-RDATE:19880403T020000
-RDATE:19890402T020000
-RDATE:19900401T020000
-RDATE:19910407T020000
-RDATE:19920405T020000
-RDATE:19930404T020000
-RDATE:19940403T020000
-RDATE:19950402T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
-RDATE:19990404T020000
+DTSTART:20000402T020000
 RDATE:20000402T020000
+RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+RDATE:19950402T020000
+RDATE:19940403T020000
+RDATE:19930404T020000
+RDATE:19920405T020000
+RDATE:19910407T020000
+RDATE:19900401T020000
+RDATE:19890402T020000
+RDATE:19880403T020000
+RDATE:19870405T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19450930T020000
-RDATE:19681027T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
-RDATE:19841028T020000
-RDATE:19851027T020000
-RDATE:19861026T020000
-RDATE:19871025T020000
-RDATE:19881030T020000
-RDATE:19891029T020000
-RDATE:19901028T020000
-RDATE:19911027T020000
-RDATE:19921025T020000
-RDATE:19931031T020000
-RDATE:19941030T020000
-RDATE:19951029T020000
-RDATE:19961027T020000
-RDATE:19971026T020000
-RDATE:19981025T020000
+DTSTART:19991031T020000
 RDATE:19991031T020000
+RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19951029T020000
+RDATE:19941030T020000
+RDATE:19931031T020000
+RDATE:19921025T020000
+RDATE:19911027T020000
+RDATE:19901028T020000
+RDATE:19891029T020000
+RDATE:19881030T020000
+RDATE:19871025T020000
+RDATE:19861026T020000
+RDATE:19851027T020000
+RDATE:19841028T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19681027T020000
+RDATE:19450930T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
-BEGIN:DAYLIGHT
+BEGIN:STANDARD
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19680101T000000
+RDATE:19680101T000000
+RDATE:19460101T000000
+END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
@@ -121,20 +122,19 @@ TZNAME:CPT
 DTSTART:19450814T180000
 RDATE:19450814T180000
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0539
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19460101T000000
-RDATE:19460101T000000
-RDATE:19680101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/La_Paz.ics b/libical/zoneinfo/America/La_Paz.ics
index a713fc6fc5..40da6c6845 100644
--- a/libical/zoneinfo/America/La_Paz.ics
+++ b/libical/zoneinfo/America/La_Paz.ics
@@ -2,14 +2,14 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/La_Paz
+TZID:/softwarestudio.org/Olson_20011022_4/America/La_Paz
 X-LIC-LOCATION:America/La_Paz
 BEGIN:STANDARD
-TZOFFSETFROM:-0433
-TZOFFSETTO:-0433
-TZNAME:LPMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+TZOFFSETFROM:-0333
+TZOFFSETTO:-0400
+TZNAME:BOT
+DTSTART:19320321T000000
+RDATE:19320321T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0433
@@ -19,11 +19,11 @@ DTSTART:19311015T000000
 RDATE:19311015T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0333
-TZOFFSETTO:-0400
-TZNAME:BOT
-DTSTART:19320321T000000
-RDATE:19320321T000000
+TZOFFSETFROM:-0433
+TZOFFSETTO:-0433
+TZNAME:CMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Lima.ics b/libical/zoneinfo/America/Lima.ics
index afb1f2244e..710d24ac4e 100644
--- a/libical/zoneinfo/America/Lima.ics
+++ b/libical/zoneinfo/America/Lima.ics
@@ -2,45 +2,45 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Lima
+TZID:/softwarestudio.org/Olson_20011022_4/America/Lima
 X-LIC-LOCATION:America/Lima
 BEGIN:STANDARD
-TZOFFSETFROM:-0508
-TZOFFSETTO:-0509
-TZNAME:LMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0509
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:PET
-DTSTART:19080728T000000
-RDATE:19080728T000000
+DTSTART:19940401T000000
+RDATE:19940401T000000
+RDATE:19900401T000000
+RDATE:19870401T000000
+RDATE:19400324T000000
+RDATE:19390326T000000
+RDATE:19380401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:PEST
-DTSTART:19380101T000000
-RDATE:19380101T000000
-RDATE:19380925T000000
-RDATE:19390924T000000
-RDATE:19870101T000000
-RDATE:19900101T000000
+DTSTART:19940101T000000
 RDATE:19940101T000000
+RDATE:19900101T000000
+RDATE:19870101T000000
+RDATE:19390924T000000
+RDATE:19380925T000000
+RDATE:19380101T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0509
 TZOFFSETTO:-0500
 TZNAME:PET
-DTSTART:19380401T000000
-RDATE:19380401T000000
-RDATE:19390326T000000
-RDATE:19400324T000000
-RDATE:19870401T000000
-RDATE:19900401T000000
-RDATE:19940401T000000
+DTSTART:19080728T000000
+RDATE:19080728T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0508
+TZOFFSETTO:-0509
+TZNAME:LMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Los_Angeles.ics b/libical/zoneinfo/America/Los_Angeles.ics
index 6a92d66dbf..2cafecb961 100644
--- a/libical/zoneinfo/America/Los_Angeles.ics
+++ b/libical/zoneinfo/America/Los_Angeles.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Los_Angeles
+TZID:/softwarestudio.org/Olson_20011022_4/America/Los_Angeles
 X-LIC-LOCATION:America/Los_Angeles
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
@@ -18,102 +18,102 @@ TZNAME:PDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0753
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:PDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19480314T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19610430T020000
-RDATE:19620429T020000
-RDATE:19630428T020000
-RDATE:19640426T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19640426T020000
+RDATE:19630428T020000
+RDATE:19620429T020000
+RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19480314T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
+TZOFFSETFROM:-0800
+TZOFFSETTO:-0800
+TZNAME:PST
+DTSTART:19670101T000000
+RDATE:19670101T000000
+RDATE:19460101T000000
+END:STANDARD
+BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19450930T020000
-RDATE:19490101T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19590927T020000
-RDATE:19600925T020000
+DTSTART:19610924T020000
 RDATE:19610924T020000
+RDATE:19600925T020000
+RDATE:19590927T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490101T020000
+RDATE:19450930T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0700
 TZNAME:PPT
 DTSTART:19450814T160000
 RDATE:19450814T160000
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
+TZOFFSETTO:-0700
+TZNAME:PWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0753
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19460101T000000
-RDATE:19460101T000000
-RDATE:19670101T000000
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Louisville.ics b/libical/zoneinfo/America/Louisville.ics
index 9f36ef0768..76780adc63 100644
--- a/libical/zoneinfo/America/Louisville.ics
+++ b/libical/zoneinfo/America/Louisville.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Louisville
+TZID:/softwarestudio.org/Olson_20011022_4/America/Louisville
 X-LIC-LOCATION:America/Louisville
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -18,75 +18,108 @@ TZNAME:EDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0543
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19741027T020000
+RDATE:19741027T020000
+RDATE:19680101T000000
+RDATE:19610723T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19210501T020000
-RDATE:19410427T020000
+DTSTART:19740106T020000
+RDATE:19740106T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
 RDATE:19460428T020000
-RDATE:19470427T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19731028T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19681027T020000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:19610430T020000
 RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19470427T020000
+RDATE:19460101T000000
+RDATE:19410427T020000
+RDATE:19210501T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19210901T020000
-RDATE:19410928T020000
-RDATE:19450930T020000
-RDATE:19460602T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19561028T020000
-RDATE:19571027T020000
-RDATE:19581026T020000
-RDATE:19591025T020000
+DTSTART:19601030T020000
 RDATE:19601030T020000
+RDATE:19591025T020000
+RDATE:19581026T020000
+RDATE:19571027T020000
+RDATE:19561028T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19460602T020000
+RDATE:19450930T020000
+RDATE:19410928T020000
+RDATE:19210901T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19210101T000000
-RDATE:19210101T000000
-RDATE:19420101T000000
-RDATE:19460101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
@@ -95,59 +128,26 @@ DTSTART:19450814T180000
 RDATE:19450814T180000
 END:DAYLIGHT
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19480425T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19740106T020000
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19610723T020000
-RDATE:19610723T020000
-RDATE:19680101T000000
-RDATE:19741027T020000
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19420101T000000
+RDATE:19420101T000000
+RDATE:19210101T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19680428T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19681027T020000
-RDATE:19681027T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
+TZOFFSETFROM:-0543
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Maceio.ics b/libical/zoneinfo/America/Maceio.ics
index afa940a628..28e47f166a 100644
--- a/libical/zoneinfo/America/Maceio.ics
+++ b/libical/zoneinfo/America/Maceio.ics
@@ -2,74 +2,88 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Maceio
+TZID:/softwarestudio.org/Olson_20011022_4/America/Maceio
 X-LIC-LOCATION:America/Maceio
-BEGIN:STANDARD
-TZOFFSETFROM:-0223
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881016T000000
-RDATE:19891015T000000
-RDATE:19951015T000000
-RDATE:19991003T000000
-RDATE:20001008T000000
+DTSTART:20001008T000000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
-RDATE:19890129T000000
-RDATE:19900211T000000
-RDATE:19960211T000000
-RDATE:20000227T000000
-RDATE:20001022T000000
+DTSTART:20020217T000000
+RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19900917T000000
-RDATE:19900917T000000
-RDATE:19951013T000000
-RDATE:19960904T000000
+DTSTART:20010913T000000
+RDATE:20010913T000000
 RDATE:19990930T000000
+RDATE:19960904T000000
+RDATE:19951013T000000
+RDATE:19900917T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0200
+TZOFFSETTO:-0300
+TZNAME:BRT
+DTSTART:20001022T000000
+RDATE:20001022T000000
+RDATE:20000227T000000
+RDATE:19960211T000000
+RDATE:19900211T000000
+RDATE:19890129T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0200
+TZNAME:BRST
+DTSTART:19991003T000000
+RDATE:19991003T000000
+RDATE:19951015T000000
+RDATE:19891015T000000
+RDATE:19881016T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0223
+TZOFFSETTO:-0300
+TZNAME:BRT
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Managua.ics b/libical/zoneinfo/America/Managua.ics
index 2021d4b9e7..4e7f8662f0 100644
--- a/libical/zoneinfo/America/Managua.ics
+++ b/libical/zoneinfo/America/Managua.ics
@@ -2,49 +2,49 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Managua
+TZID:/softwarestudio.org/Olson_20011022_4/America/Managua
 X-LIC-LOCATION:America/Managua
 BEGIN:STANDARD
-TZOFFSETFROM:-0545
-TZOFFSETTO:-0545
-TZNAME:MMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0545
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19340623T000000
-RDATE:19340623T000000
+DTSTART:19981201T000000
+RDATE:19981201T000000
+RDATE:19920924T000000
+RDATE:19800623T000000
+RDATE:19790625T000000
+RDATE:19750216T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19730501T000000
-RDATE:19730501T000000
+DTSTART:19930101T040000
 RDATE:19930101T040000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19750216T000000
-RDATE:19750216T000000
-RDATE:19790625T000000
-RDATE:19800623T000000
-RDATE:19920924T000000
-RDATE:19981201T000000
+RDATE:19730501T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19790318T000000
-RDATE:19790318T000000
-RDATE:19800316T000000
+DTSTART:19920101T040000
 RDATE:19920101T040000
+RDATE:19800316T000000
+RDATE:19790318T000000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0545
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19340623T000000
+RDATE:19340623T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0545
+TZOFFSETTO:-0545
+TZNAME:MMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Manaus.ics b/libical/zoneinfo/America/Manaus.ics
index fa53698fbe..be205d2c19 100644
--- a/libical/zoneinfo/America/Manaus.ics
+++ b/libical/zoneinfo/America/Manaus.ics
@@ -2,59 +2,59 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Manaus
+TZID:/softwarestudio.org/Olson_20011022_4/America/Manaus
 X-LIC-LOCATION:America/Manaus
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-RDATE:19880912T000000
-RDATE:19930928T000000
+DTSTART:19940922T000000
 RDATE:19940922T000000
+RDATE:19930928T000000
+RDATE:19880912T000000
+RDATE:19140101T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AMST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19931017T000000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
+DTSTART:19940220T000000
 RDATE:19940220T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0300
+TZNAME:AMST
+DTSTART:19931017T000000
+RDATE:19931017T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
+END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Martinique.ics b/libical/zoneinfo/America/Martinique.ics
index 37c9a69860..04e22dbfc2 100644
--- a/libical/zoneinfo/America/Martinique.ics
+++ b/libical/zoneinfo/America/Martinique.ics
@@ -2,21 +2,14 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Martinique
+TZID:/softwarestudio.org/Olson_20011022_4/America/Martinique
 X-LIC-LOCATION:America/Martinique
 BEGIN:STANDARD
-TZOFFSETFROM:-0404
-TZOFFSETTO:-0404
-TZNAME:FFMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0404
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19110501T000000
-RDATE:19110501T000000
+DTSTART:19800928T000000
+RDATE:19800928T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
@@ -26,11 +19,18 @@ DTSTART:19800406T000000
 RDATE:19800406T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0404
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19800928T000000
-RDATE:19800928T000000
+DTSTART:19110501T000000
+RDATE:19110501T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0404
+TZOFFSETTO:-0404
+TZNAME:FFMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Mazatlan.ics b/libical/zoneinfo/America/Mazatlan.ics
index fbce907017..b44df62a84 100644
--- a/libical/zoneinfo/America/Mazatlan.ics
+++ b/libical/zoneinfo/America/Mazatlan.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Mazatlan
+TZID:/softwarestudio.org/Olson_20011022_4/America/Mazatlan
 X-LIC-LOCATION:America/Mazatlan
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
@@ -19,34 +19,36 @@ DTSTART:20010930T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0706
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19211231T235420
-RDATE:19211231T235420
+DTSTART:20001029T020000
+RDATE:20001029T020000
+RDATE:19991031T020000
+RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19420424T000000
+RDATE:19311001T000000
+RDATE:19301115T000000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19270610T230000
-RDATE:19270610T230000
-RDATE:19310501T230000
-RDATE:19320401T000000
-END:STANDARD
+TZNAME:MDT
+DTSTART:20000402T020000
+RDATE:20000402T020000
+RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19301115T000000
-RDATE:19301115T000000
-RDATE:19311001T000000
-RDATE:19420424T000000
-RDATE:19961027T020000
-RDATE:19971026T020000
-RDATE:19981025T020000
-RDATE:19991031T020000
-RDATE:20001029T020000
+DTSTART:19700101T000000
+RDATE:19700101T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
@@ -56,22 +58,20 @@ DTSTART:19490114T000000
 RDATE:19490114T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0800
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19320401T000000
+RDATE:19320401T000000
+RDATE:19310501T230000
+RDATE:19270610T230000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0706
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19700101T000000
-RDATE:19700101T000000
+DTSTART:19211231T235420
+RDATE:19211231T235420
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19960407T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
-RDATE:19990404T020000
-RDATE:20000402T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Mendoza.ics b/libical/zoneinfo/America/Mendoza.ics
index d5a10583cf..70c552df29 100644
--- a/libical/zoneinfo/America/Mendoza.ics
+++ b/libical/zoneinfo/America/Mendoza.ics
@@ -2,147 +2,147 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Mendoza
+TZID:/softwarestudio.org/Olson_20011022_4/America/Mendoza
 X-LIC-LOCATION:America/Mendoza
 BEGIN:STANDARD
-TZOFFSETFROM:-0435
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
+DTSTART:20000303T000000
+RDATE:20000303T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19301201T000000
-RDATE:19301201T000000
-RDATE:19311015T000000
-RDATE:19321101T000000
-RDATE:19331101T000000
-RDATE:19341101T000000
-RDATE:19351101T000000
-RDATE:19361101T000000
-RDATE:19371101T000000
-RDATE:19381101T000000
-RDATE:19391101T000000
-RDATE:19400701T000000
-RDATE:19411015T000000
-RDATE:19431015T000000
-RDATE:19461001T000000
-RDATE:19631215T000000
-RDATE:19641015T000000
-RDATE:19651015T000000
-RDATE:19661015T000000
-RDATE:19671001T000000
-RDATE:19681006T000000
+DTSTART:19991003T000000
+RDATE:19991003T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19310401T000000
-RDATE:19310401T000000
-RDATE:19320301T000000
-RDATE:19330301T000000
-RDATE:19340301T000000
-RDATE:19350301T000000
-RDATE:19360301T000000
-RDATE:19370301T000000
-RDATE:19380301T000000
-RDATE:19390301T000000
-RDATE:19400301T000000
-RDATE:19410615T000000
-RDATE:19430801T000000
-RDATE:19460301T000000
-RDATE:19631001T000000
-RDATE:19640301T000000
-RDATE:19650301T000000
-RDATE:19660301T000000
-RDATE:19670401T000000
-RDATE:19680407T000000
-RDATE:19690406T000000
+DTSTART:19921018T000000
+RDATE:19921018T000000
+RDATE:19691005T000000
 END:STANDARD
 BEGIN:STANDARD
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0400
+TZNAME:WART
+DTSTART:19920301T000000
+RDATE:19920301T000000
+END:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
-RDATE:19921018T000000
+TZNAME:WARST
+DTSTART:19911015T000000
+RDATE:19911015T000000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0200
+TZOFFSETTO:-0400
+TZNAME:WART
+DTSTART:19910303T000000
+RDATE:19910303T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:ARST
-DTSTART:19740123T000000
-RDATE:19740123T000000
-RDATE:19741006T000000
-RDATE:19751005T000000
-RDATE:19761003T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881201T000000
-RDATE:19891015T000000
+DTSTART:19901021T000000
 RDATE:19901021T000000
+RDATE:19891015T000000
+RDATE:19881201T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19761003T000000
+RDATE:19751005T000000
+RDATE:19741006T000000
+RDATE:19740123T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19740501T000000
-RDATE:19740501T000000
-RDATE:19750406T000000
-RDATE:19760404T000000
-RDATE:19770403T000000
-RDATE:19860314T000000
-RDATE:19870213T000000
-RDATE:19880207T000000
-RDATE:19890305T000000
+DTSTART:19900304T000000
 RDATE:19900304T000000
+RDATE:19890305T000000
+RDATE:19880207T000000
+RDATE:19870213T000000
+RDATE:19860314T000000
+RDATE:19770403T000000
+RDATE:19760404T000000
+RDATE:19750406T000000
+RDATE:19740501T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
-TZNAME:WART
-DTSTART:19910303T000000
-RDATE:19910303T000000
+TZNAME:ART
+DTSTART:19690406T000000
+RDATE:19690406T000000
+RDATE:19680407T000000
+RDATE:19670401T000000
+RDATE:19660301T000000
+RDATE:19650301T000000
+RDATE:19640301T000000
+RDATE:19631001T000000
+RDATE:19460301T000000
+RDATE:19430801T000000
+RDATE:19410615T000000
+RDATE:19400301T000000
+RDATE:19390301T000000
+RDATE:19380301T000000
+RDATE:19370301T000000
+RDATE:19360301T000000
+RDATE:19350301T000000
+RDATE:19340301T000000
+RDATE:19330301T000000
+RDATE:19320301T000000
+RDATE:19310401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
-TZNAME:WARST
-DTSTART:19911015T000000
-RDATE:19911015T000000
+TZNAME:ARST
+DTSTART:19681006T000000
+RDATE:19681006T000000
+RDATE:19671001T000000
+RDATE:19661015T000000
+RDATE:19651015T000000
+RDATE:19641015T000000
+RDATE:19631215T000000
+RDATE:19461001T000000
+RDATE:19431015T000000
+RDATE:19411015T000000
+RDATE:19400701T000000
+RDATE:19391101T000000
+RDATE:19381101T000000
+RDATE:19371101T000000
+RDATE:19361101T000000
+RDATE:19351101T000000
+RDATE:19341101T000000
+RDATE:19331101T000000
+RDATE:19321101T000000
+RDATE:19311015T000000
+RDATE:19301201T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0417
 TZOFFSETTO:-0400
-TZNAME:WART
-DTSTART:19920301T000000
-RDATE:19920301T000000
+TZNAME:ART
+DTSTART:19200501T000000
+RDATE:19200501T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:20000303T000000
-RDATE:20000303T000000
+TZOFFSETFROM:-0435
+TZOFFSETTO:-0417
+TZNAME:CMT
+DTSTART:18941101T000000
+RDATE:18941101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Menominee.ics b/libical/zoneinfo/America/Menominee.ics
index a65124d19d..1473c5cd30 100644
--- a/libical/zoneinfo/America/Menominee.ics
+++ b/libical/zoneinfo/America/Menominee.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Menominee
+TZID:/softwarestudio.org/Olson_20011022_4/America/Menominee
 X-LIC-LOCATION:America/Menominee
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
@@ -18,54 +18,61 @@ TZNAME:CDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0550
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18850918T120000
-RDATE:18850918T120000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19460428T020000
-RDATE:19660424T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19660424T020000
+RDATE:19460428T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:19730429T020000
+RDATE:19730429T020000
 END:DAYLIGHT
 BEGIN:STANDARD
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19690427T020000
+RDATE:19690427T020000
+END:STANDARD
+BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19450930T020000
-RDATE:19460929T020000
+DTSTART:19661030T020000
 RDATE:19661030T020000
+RDATE:19460929T020000
+RDATE:19450930T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
-BEGIN:DAYLIGHT
+BEGIN:STANDARD
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19460101T000000
+RDATE:19460101T000000
+END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
@@ -73,26 +80,19 @@ TZNAME:CPT
 DTSTART:19450814T180000
 RDATE:19450814T180000
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0550
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19460101T000000
-RDATE:19460101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19690427T020000
-RDATE:19690427T020000
+DTSTART:18850918T120000
+RDATE:18850918T120000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19730429T020000
-RDATE:19730429T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Merida.ics b/libical/zoneinfo/America/Merida.ics
index 042aac0d76..f25f275b03 100644
--- a/libical/zoneinfo/America/Merida.ics
+++ b/libical/zoneinfo/America/Merida.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Merida
+TZID:/softwarestudio.org/Olson_20011022_4/America/Merida
 X-LIC-LOCATION:America/Merida
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
@@ -19,12 +19,28 @@ DTSTART:20010930T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0558
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19220101T000132
-RDATE:19220101T000132
+DTSTART:20001029T020000
+RDATE:20001029T020000
+RDATE:19991031T020000
+RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19821202T000000
 END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:20000402T020000
+RDATE:20000402T020000
+RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
@@ -33,27 +49,11 @@ DTSTART:19811223T000000
 RDATE:19811223T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0558
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19821202T000000
-RDATE:19821202T000000
-RDATE:19961027T020000
-RDATE:19971026T020000
-RDATE:19981025T020000
-RDATE:19991031T020000
-RDATE:20001029T020000
+DTSTART:19220101T000132
+RDATE:19220101T000132
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19960407T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
-RDATE:19990404T020000
-RDATE:20000402T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Mexico_City.ics b/libical/zoneinfo/America/Mexico_City.ics
index c1a8c25230..85e67eb4e3 100644
--- a/libical/zoneinfo/America/Mexico_City.ics
+++ b/libical/zoneinfo/America/Mexico_City.ics
@@ -2,81 +2,69 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Mexico_City
+TZID:/softwarestudio.org/Olson_20011022_4/America/Mexico_City
 X-LIC-LOCATION:America/Mexico_City
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20010506T020000
-RRULE:FREQ=YEARLY;BYMONTH=5;BYDAY=1SU
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
 DTSTART:20010930T020000
-RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0637
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19220101T002324
-RDATE:19220101T002324
+RDATE:20010930T020000
+RDATE:20001029T020000
+RDATE:19991031T020000
+RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19500730T000000
+RDATE:19440501T000000
+RDATE:19410401T000000
+RDATE:19390625T000000
 END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:20010506T020000
+RDATE:20010506T020000
+RDATE:20000402T020000
+RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+RDATE:19500212T000000
+RDATE:19401209T000000
+RDATE:19390205T000000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CWT
+DTSTART:19431216T000000
+RDATE:19431216T000000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19270610T230000
-RDATE:19270610T230000
-RDATE:19310501T230000
+DTSTART:19320401T000000
 RDATE:19320401T000000
+RDATE:19310501T230000
+RDATE:19270610T230000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19301115T000000
-RDATE:19301115T000000
+DTSTART:19311001T000000
 RDATE:19311001T000000
+RDATE:19301115T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19390205T000000
-RDATE:19390205T000000
-RDATE:19401209T000000
-RDATE:19500212T000000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
-RDATE:19990404T020000
-RDATE:20000402T020000
-END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19390625T000000
-RDATE:19390625T000000
-RDATE:19410401T000000
-RDATE:19440501T000000
-RDATE:19500730T000000
-RDATE:19961027T020000
-RDATE:19971026T020000
-RDATE:19981025T020000
-RDATE:19991031T020000
-RDATE:20001029T020000
+TZOFFSETFROM:-0637
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19220101T002324
+RDATE:19220101T002324
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19431216T000000
-RDATE:19431216T000000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Miquelon.ics b/libical/zoneinfo/America/Miquelon.ics
index cc2f5b5b70..a7f4a69bb5 100644
--- a/libical/zoneinfo/America/Miquelon.ics
+++ b/libical/zoneinfo/America/Miquelon.ics
@@ -2,13 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Miquelon
+TZID:/softwarestudio.org/Olson_20011022_4/America/Miquelon
 X-LIC-LOCATION:America/Miquelon
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:PMST
-DTSTART:19811025T020000
+DTSTART:19801026T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
@@ -18,6 +18,25 @@ TZNAME:PMDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0200
+TZNAME:PMDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0200
+TZNAME:PMDT
+DTSTART:19800501T000000
+RDATE:19800501T000000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0345
 TZOFFSETTO:-0400
@@ -25,31 +44,5 @@ TZNAME:AST
 DTSTART:19110515T000000
 RDATE:19110515T000000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:PMST
-DTSTART:19800501T000000
-RDATE:19800501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:PMST
-DTSTART:19801026T020000
-RDATE:19801026T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:PMDT
-DTSTART:19810426T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Monterrey.ics b/libical/zoneinfo/America/Monterrey.ics
index e70d3398cc..e251f93671 100644
--- a/libical/zoneinfo/America/Monterrey.ics
+++ b/libical/zoneinfo/America/Monterrey.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Monterrey
+TZID:/softwarestudio.org/Olson_20011022_4/America/Monterrey
 X-LIC-LOCATION:America/Monterrey
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
@@ -19,43 +19,43 @@ DTSTART:20010930T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0641
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19211231T231844
-RDATE:19211231T231844
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19880101T000000
-RDATE:19880101T000000
-RDATE:19890101T000000
+DTSTART:20001029T020000
+RDATE:20001029T020000
+RDATE:19991031T020000
+RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19881030T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19880403T020000
-RDATE:19880403T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
-RDATE:19990404T020000
+DTSTART:20000402T020000
 RDATE:20000402T020000
+RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+RDATE:19880403T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19881030T020000
-RDATE:19881030T020000
-RDATE:19961027T020000
-RDATE:19971026T020000
-RDATE:19981025T020000
-RDATE:19991031T020000
-RDATE:20001029T020000
+DTSTART:19890101T000000
+RDATE:19890101T000000
+RDATE:19880101T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0641
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19211231T231844
+RDATE:19211231T231844
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Montevideo.ics b/libical/zoneinfo/America/Montevideo.ics
index 5bf4adc20e..91b3acdb5c 100644
--- a/libical/zoneinfo/America/Montevideo.ics
+++ b/libical/zoneinfo/America/Montevideo.ics
@@ -2,132 +2,132 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Montevideo
+TZID:/softwarestudio.org/Olson_20011022_4/America/Montevideo
 X-LIC-LOCATION:America/Montevideo
 BEGIN:STANDARD
-TZOFFSETFROM:-0345
-TZOFFSETTO:-0345
-TZNAME:MMT
-DTSTART:18980628T000000
-RDATE:18980628T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0345
-TZOFFSETTO:-0330
-TZNAME:UYT
-DTSTART:19200501T000000
-RDATE:19200501T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0330
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
-TZNAME:UYHST
-DTSTART:19231002T000000
-RDATE:19231002T000000
-RDATE:19241001T000000
-RDATE:19251001T000000
-RDATE:19331029T000000
-RDATE:19341028T000000
-RDATE:19351027T000000
-RDATE:19361101T000000
-RDATE:19371031T000000
-RDATE:19381030T000000
-RDATE:19391029T000000
-RDATE:19401027T000000
-RDATE:19420101T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0330
 TZNAME:UYT
-DTSTART:19240401T000000
-RDATE:19240401T000000
-RDATE:19250401T000000
-RDATE:19260401T000000
-RDATE:19340401T000000
-RDATE:19350331T000000
-RDATE:19360329T000000
-RDATE:19370328T000000
-RDATE:19380327T000000
-RDATE:19390326T000000
-RDATE:19400331T000000
-RDATE:19410330T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0330
-TZNAME:UYT
-DTSTART:19410801T000000
-RDATE:19410801T000000
+DTSTART:19930228T000000
+RDATE:19930228T000000
+RDATE:19920301T000000
+RDATE:19910303T000000
+RDATE:19900304T000000
+RDATE:19890312T000000
+RDATE:19880314T000000
+RDATE:19800501T000000
+RDATE:19780401T000000
+RDATE:19761001T000000
+RDATE:19720815T000000
+RDATE:19671031T000000
+RDATE:19661031T000000
+RDATE:19650926T000000
+RDATE:19600306T000000
+RDATE:19591115T000000
+RDATE:19430314T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:UYST
-DTSTART:19421214T000000
-RDATE:19421214T000000
-RDATE:19590524T000000
-RDATE:19600117T000000
-RDATE:19650404T000000
-RDATE:19660403T000000
-RDATE:19670402T000000
-RDATE:19720424T000000
-RDATE:19771204T000000
-RDATE:19791001T000000
-RDATE:19871214T000000
-RDATE:19881211T000000
-RDATE:19891029T000000
-RDATE:19901021T000000
-RDATE:19911027T000000
+DTSTART:19921018T000000
 RDATE:19921018T000000
+RDATE:19911027T000000
+RDATE:19901021T000000
+RDATE:19891029T000000
+RDATE:19881211T000000
+RDATE:19871214T000000
+RDATE:19791001T000000
+RDATE:19771204T000000
+RDATE:19720424T000000
+RDATE:19670402T000000
+RDATE:19660403T000000
+RDATE:19650404T000000
+RDATE:19600117T000000
+RDATE:19590524T000000
+RDATE:19421214T000000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0230
+TZOFFSETTO:-0200
+TZNAME:UYST
+DTSTART:19741222T000000
+RDATE:19741222T000000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:UYT
-DTSTART:19430314T000000
-RDATE:19430314T000000
-RDATE:19591115T000000
-RDATE:19600306T000000
-RDATE:19650926T000000
-RDATE:19661031T000000
-RDATE:19671031T000000
-RDATE:19720815T000000
-RDATE:19761001T000000
-RDATE:19780401T000000
-RDATE:19800501T000000
-RDATE:19880314T000000
-RDATE:19890312T000000
-RDATE:19900304T000000
-RDATE:19910303T000000
-RDATE:19920301T000000
-RDATE:19930228T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0230
 TZNAME:UYHST
-DTSTART:19680527T000000
-RDATE:19680527T000000
-RDATE:19690527T000000
-RDATE:19700527T000000
+DTSTART:19740310T000000
 RDATE:19740310T000000
+RDATE:19700527T000000
+RDATE:19690527T000000
+RDATE:19680527T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0230
 TZOFFSETTO:-0300
 TZNAME:UYT
-DTSTART:19681202T000000
-RDATE:19681202T000000
-RDATE:19691202T000000
+DTSTART:19701202T000000
 RDATE:19701202T000000
+RDATE:19691202T000000
+RDATE:19681202T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0230
-TZOFFSETTO:-0200
-TZNAME:UYST
-DTSTART:19741222T000000
-RDATE:19741222T000000
+TZOFFSETFROM:-0330
+TZOFFSETTO:-0300
+TZNAME:UYHST
+DTSTART:19420101T000000
+RDATE:19420101T000000
+RDATE:19401027T000000
+RDATE:19391029T000000
+RDATE:19381030T000000
+RDATE:19371031T000000
+RDATE:19361101T000000
+RDATE:19351027T000000
+RDATE:19341028T000000
+RDATE:19331029T000000
+RDATE:19251001T000000
+RDATE:19241001T000000
+RDATE:19231002T000000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0330
+TZOFFSETTO:-0330
+TZNAME:UYT
+DTSTART:19410801T000000
+RDATE:19410801T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0330
+TZNAME:UYT
+DTSTART:19410330T000000
+RDATE:19410330T000000
+RDATE:19400331T000000
+RDATE:19390326T000000
+RDATE:19380327T000000
+RDATE:19370328T000000
+RDATE:19360329T000000
+RDATE:19350331T000000
+RDATE:19340401T000000
+RDATE:19260401T000000
+RDATE:19250401T000000
+RDATE:19240401T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0345
+TZOFFSETTO:-0330
+TZNAME:UYT
+DTSTART:19200501T000000
+RDATE:19200501T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0345
+TZOFFSETTO:-0345
+TZNAME:MMT
+DTSTART:18980628T000000
+RDATE:18980628T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Montreal.ics b/libical/zoneinfo/America/Montreal.ics
index 5f0e1ba454..d1b22d572b 100644
--- a/libical/zoneinfo/America/Montreal.ics
+++ b/libical/zoneinfo/America/Montreal.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Montreal
+TZID:/softwarestudio.org/Olson_20011022_4/America/Montreal
 X-LIC-LOCATION:America/Montreal
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -18,122 +18,122 @@ TZNAME:EDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0454
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19170325T020000
-RDATE:19170325T020000
-RDATE:19180414T020000
-RDATE:19190331T023000
-RDATE:19200502T023000
-RDATE:19210501T020000
-RDATE:19220430T020000
-RDATE:19240517T020000
-RDATE:19250503T020000
-RDATE:19260502T020000
-RDATE:19270501T000000
-RDATE:19280429T000000
-RDATE:19290428T000000
-RDATE:19300427T000000
-RDATE:19310426T000000
-RDATE:19320501T000000
-RDATE:19330430T000000
-RDATE:19340429T000000
-RDATE:19350428T000000
-RDATE:19360426T000000
-RDATE:19370425T000000
-RDATE:19380424T000000
-RDATE:19390430T000000
-RDATE:19400428T000000
-RDATE:19460428T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19610430T020000
-RDATE:19620429T020000
-RDATE:19630428T020000
-RDATE:19640426T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19640426T020000
+RDATE:19630428T020000
+RDATE:19620429T020000
+RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460428T020000
+RDATE:19400428T000000
+RDATE:19390430T000000
+RDATE:19380424T000000
+RDATE:19370425T000000
+RDATE:19360426T000000
+RDATE:19350428T000000
+RDATE:19340429T000000
+RDATE:19330430T000000
+RDATE:19320501T000000
+RDATE:19310426T000000
+RDATE:19300427T000000
+RDATE:19290428T000000
+RDATE:19280429T000000
+RDATE:19270501T000000
+RDATE:19260502T020000
+RDATE:19250503T020000
+RDATE:19240517T020000
+RDATE:19220430T020000
+RDATE:19210501T020000
+RDATE:19200502T023000
+RDATE:19190331T023000
+RDATE:19180414T020000
+RDATE:19170325T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19170424T000000
-RDATE:19170424T000000
-RDATE:19181031T020000
-RDATE:19191025T023000
-RDATE:19201003T023000
-RDATE:19211002T023000
-RDATE:19221001T023000
-RDATE:19240928T023000
-RDATE:19250927T023000
-RDATE:19260926T023000
-RDATE:19270925T000000
-RDATE:19280930T000000
-RDATE:19290929T000000
-RDATE:19300928T000000
-RDATE:19310927T000000
-RDATE:19320925T000000
-RDATE:19331001T000000
-RDATE:19340930T000000
-RDATE:19350929T000000
-RDATE:19360927T000000
-RDATE:19370926T000000
-RDATE:19380925T000000
-RDATE:19390924T000000
-RDATE:19450930T020000
-RDATE:19460929T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19491030T020000
-RDATE:19501029T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
+DTSTART:19560930T020000
 RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19501029T020000
+RDATE:19491030T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19460929T020000
+RDATE:19450930T020000
+RDATE:19390924T000000
+RDATE:19380925T000000
+RDATE:19370926T000000
+RDATE:19360927T000000
+RDATE:19350929T000000
+RDATE:19340930T000000
+RDATE:19331001T000000
+RDATE:19320925T000000
+RDATE:19310927T000000
+RDATE:19300928T000000
+RDATE:19290929T000000
+RDATE:19280930T000000
+RDATE:19270925T000000
+RDATE:19260926T023000
+RDATE:19250927T023000
+RDATE:19240928T023000
+RDATE:19221001T023000
+RDATE:19211002T023000
+RDATE:19201003T023000
+RDATE:19191025T023000
+RDATE:19181031T020000
+RDATE:19170424T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0454
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Nassau.ics b/libical/zoneinfo/America/Nassau.ics
index 46a8130bfb..8e819e0608 100644
--- a/libical/zoneinfo/America/Nassau.ics
+++ b/libical/zoneinfo/America/Nassau.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Nassau
+TZID:/softwarestudio.org/Olson_20011022_4/America/Nassau
 X-LIC-LOCATION:America/Nassau
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -18,6 +18,35 @@ TZNAME:EDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19640426T020000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0509
 TZOFFSETTO:-0500
@@ -25,34 +54,5 @@ TZNAME:EST
 DTSTART:19120302T000000
 RDATE:19120302T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19640426T020000
-RDATE:19640426T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/New_York.ics b/libical/zoneinfo/America/New_York.ics
index 4f555b2f82..2bc21b7ab9 100644
--- a/libical/zoneinfo/America/New_York.ics
+++ b/libical/zoneinfo/America/New_York.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/New_York
+TZID:/softwarestudio.org/Olson_20011022_4/America/New_York
 X-LIC-LOCATION:America/New_York
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -18,147 +18,147 @@ TZNAME:EDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0456
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19200328T020000
-RDATE:19210424T020000
-RDATE:19220430T020000
-RDATE:19230429T020000
-RDATE:19240427T020000
-RDATE:19250426T020000
-RDATE:19260425T020000
-RDATE:19270424T020000
-RDATE:19280429T020000
-RDATE:19290428T020000
-RDATE:19300427T020000
-RDATE:19310426T020000
-RDATE:19320424T020000
-RDATE:19330430T020000
-RDATE:19340429T020000
-RDATE:19350428T020000
-RDATE:19360426T020000
-RDATE:19370425T020000
-RDATE:19380424T020000
-RDATE:19390430T020000
-RDATE:19400428T020000
-RDATE:19410427T020000
-RDATE:19460428T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19610430T020000
-RDATE:19620429T020000
-RDATE:19630428T020000
-RDATE:19640426T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19640426T020000
+RDATE:19630428T020000
+RDATE:19620429T020000
+RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460428T020000
+RDATE:19410427T020000
+RDATE:19400428T020000
+RDATE:19390430T020000
+RDATE:19380424T020000
+RDATE:19370425T020000
+RDATE:19360426T020000
+RDATE:19350428T020000
+RDATE:19340429T020000
+RDATE:19330430T020000
+RDATE:19320424T020000
+RDATE:19310426T020000
+RDATE:19300427T020000
+RDATE:19290428T020000
+RDATE:19280429T020000
+RDATE:19270424T020000
+RDATE:19260425T020000
+RDATE:19250426T020000
+RDATE:19240427T020000
+RDATE:19230429T020000
+RDATE:19220430T020000
+RDATE:19210424T020000
+RDATE:19200328T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19201031T020000
-RDATE:19210925T020000
-RDATE:19220924T020000
-RDATE:19230930T020000
-RDATE:19240928T020000
-RDATE:19250927T020000
-RDATE:19260926T020000
-RDATE:19270925T020000
-RDATE:19280930T020000
-RDATE:19290929T020000
-RDATE:19300928T020000
-RDATE:19310927T020000
-RDATE:19320925T020000
-RDATE:19330924T020000
-RDATE:19340930T020000
-RDATE:19350929T020000
-RDATE:19360927T020000
-RDATE:19370926T020000
-RDATE:19380925T020000
-RDATE:19390924T020000
-RDATE:19400929T020000
-RDATE:19410928T020000
-RDATE:19450930T020000
-RDATE:19460929T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
+DTSTART:19670101T000000
+RDATE:19670101T000000
+RDATE:19460101T000000
+RDATE:19420101T000000
+RDATE:19200101T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19200101T000000
-RDATE:19200101T000000
-RDATE:19420101T000000
-RDATE:19460101T000000
-RDATE:19670101T000000
+DTSTART:19540926T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19460929T020000
+RDATE:19450930T020000
+RDATE:19410928T020000
+RDATE:19400929T020000
+RDATE:19390924T020000
+RDATE:19380925T020000
+RDATE:19370926T020000
+RDATE:19360927T020000
+RDATE:19350929T020000
+RDATE:19340930T020000
+RDATE:19330924T020000
+RDATE:19320925T020000
+RDATE:19310927T020000
+RDATE:19300928T020000
+RDATE:19290929T020000
+RDATE:19280930T020000
+RDATE:19270925T020000
+RDATE:19260926T020000
+RDATE:19250927T020000
+RDATE:19240928T020000
+RDATE:19230930T020000
+RDATE:19220924T020000
+RDATE:19210925T020000
+RDATE:19201031T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:EPT
 DTSTART:19450814T190000
 RDATE:19450814T190000
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0456
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:18831118T120000
+RDATE:18831118T120000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Nipigon.ics b/libical/zoneinfo/America/Nipigon.ics
index 6a4e2faf62..6cea598d0d 100644
--- a/libical/zoneinfo/America/Nipigon.ics
+++ b/libical/zoneinfo/America/Nipigon.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Nipigon
+TZID:/softwarestudio.org/Olson_20011022_4/America/Nipigon
 X-LIC-LOCATION:America/Nipigon
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -18,40 +18,33 @@ TZNAME:EDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0553
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19181031T020000
-RDATE:19181031T020000
+DTSTART:19450930T020000
 RDATE:19450930T020000
+RDATE:19181031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
@@ -60,5 +53,12 @@ TZNAME:EWT
 DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0553
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:18950101T000000
+RDATE:18950101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Nome.ics b/libical/zoneinfo/America/Nome.ics
index cc946a48d4..4995f5d4c0 100644
--- a/libical/zoneinfo/America/Nome.ics
+++ b/libical/zoneinfo/America/Nome.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Nome
+TZID:/softwarestudio.org/Olson_20011022_4/America/Nome
 X-LIC-LOCATION:America/Nome
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
@@ -18,42 +18,79 @@ TZNAME:AKDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0900
+TZOFFSETTO:-0800
+TZNAME:AKDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:+1258
-TZOFFSETTO:-1102
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
+TZOFFSETFROM:-1000
+TZOFFSETTO:-0900
+TZNAME:AKST
+DTSTART:19831030T020000
+RDATE:19831030T020000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-1100
+TZOFFSETTO:-1000
+TZNAME:BDT
+DTSTART:19830424T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-1000
+TZOFFSETTO:-1100
+TZNAME:BST
+DTSTART:19821031T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-1102
+TZOFFSETFROM:-1100
 TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19000820T120000
-RDATE:19000820T120000
+TZNAME:BST
+DTSTART:19690101T000000
+RDATE:19690101T000000
+RDATE:19670401T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-1100
 TZOFFSETTO:-1100
 TZNAME:NST
-DTSTART:19420101T000000
-RDATE:19420101T000000
+DTSTART:19460101T000000
 RDATE:19460101T000000
+RDATE:19420101T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1000
-TZNAME:NWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1000
-TZNAME:NPT
-DTSTART:19450814T130000
-RDATE:19450814T130000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-1000
 TZOFFSETTO:-1100
@@ -61,70 +98,33 @@ TZNAME:NST
 DTSTART:19450930T020000
 RDATE:19450930T020000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19670401T000000
-RDATE:19670401T000000
-RDATE:19690101T000000
-END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-1000
+TZOFFSETTO:-1000
+TZNAME:NPT
+DTSTART:19450814T130000
+RDATE:19450814T130000
+END:DAYLIGHT
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-1100
 TZOFFSETTO:-1000
-TZNAME:BDT
-DTSTART:19690427T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
+TZNAME:NWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-1000
+TZOFFSETFROM:-1102
 TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19691026T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
+TZNAME:NST
+DTSTART:19000820T120000
+RDATE:19000820T120000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-0900
-TZNAME:AKST
-DTSTART:19831030T020000
-RDATE:19831030T020000
+TZOFFSETFROM:+1258
+TZOFFSETTO:-1102
+TZNAME:LMT
+DTSTART:18671018T000000
+RDATE:18671018T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:AKDT
-DTSTART:19840429T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Noronha.ics b/libical/zoneinfo/America/Noronha.ics
index a651399dab..5f0ea19552 100644
--- a/libical/zoneinfo/America/Noronha.ics
+++ b/libical/zoneinfo/America/Noronha.ics
@@ -2,65 +2,65 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Noronha
+TZID:/softwarestudio.org/Olson_20011022_4/America/Noronha
 X-LIC-LOCATION:America/Noronha
 BEGIN:STANDARD
-TZOFFSETFROM:-0210
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0200
 TZNAME:FNT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19900917T000000
+RDATE:19900917T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0100
-TZNAME:FNST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881016T000000
-RDATE:19891015T000000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0100
 TZOFFSETTO:-0200
 TZNAME:FNT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
-RDATE:19890129T000000
+DTSTART:19900211T000000
 RDATE:19900211T000000
+RDATE:19890129T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0200
+TZOFFSETTO:-0100
+TZNAME:FNST
+DTSTART:19891015T000000
+RDATE:19891015T000000
+RDATE:19881016T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0210
 TZOFFSETTO:-0200
 TZNAME:FNT
-DTSTART:19900917T000000
-RDATE:19900917T000000
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Panama.ics b/libical/zoneinfo/America/Panama.ics
index 96c458ac26..ee00141f00 100644
--- a/libical/zoneinfo/America/Panama.ics
+++ b/libical/zoneinfo/America/Panama.ics
@@ -2,21 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Panama
+TZID:/softwarestudio.org/Olson_20011022_4/America/Panama
 X-LIC-LOCATION:America/Panama
 BEGIN:STANDARD
-TZOFFSETFROM:-0518
-TZOFFSETTO:-0520
-TZNAME:PMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0520
 TZOFFSETTO:-0500
 TZNAME:EST
 DTSTART:19080422T000000
 RDATE:19080422T000000
 END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0518
+TZOFFSETTO:-0520
+TZNAME:CMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Pangnirtung.ics b/libical/zoneinfo/America/Pangnirtung.ics
index 70f6eec364..07ced5f342 100644
--- a/libical/zoneinfo/America/Pangnirtung.ics
+++ b/libical/zoneinfo/America/Pangnirtung.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Pangnirtung
+TZID:/softwarestudio.org/Olson_20011022_4/America/Pangnirtung
 X-LIC-LOCATION:America/Pangnirtung
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
@@ -19,72 +19,99 @@ DTSTART:20011028T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0423
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:20001029T020000
+RDATE:20001029T020000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:20000402T020000
+RDATE:20000402T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19991031T020000
+RDATE:19991031T020000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:18840101T000000
-RDATE:18840101T000000
+TZNAME:EDT
+DTSTART:19990404T020000
+RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19981025T020000
+RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19951029T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19190525T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-RDATE:19870405T020000
-RDATE:19880403T020000
-RDATE:19890402T020000
-RDATE:19900401T020000
-RDATE:19910407T020000
-RDATE:19920405T020000
-RDATE:19930404T020000
-RDATE:19940403T020000
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19950402T020000
+RDATE:19950402T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191101T000000
-RDATE:19450930T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
-RDATE:19841028T020000
-RDATE:19851027T020000
-RDATE:19861026T020000
-RDATE:19871025T020000
-RDATE:19881030T020000
-RDATE:19891029T020000
-RDATE:19901028T020000
-RDATE:19911027T020000
-RDATE:19921025T020000
-RDATE:19931031T020000
+DTSTART:19941030T020000
 RDATE:19941030T020000
+RDATE:19931031T020000
+RDATE:19921025T020000
+RDATE:19911027T020000
+RDATE:19901028T020000
+RDATE:19891029T020000
+RDATE:19881030T020000
+RDATE:19871025T020000
+RDATE:19861026T020000
+RDATE:19851027T020000
+RDATE:19841028T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19450930T020000
+RDATE:19191101T000000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
-TZNAME:AWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0200
-TZNAME:ADDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
+TZNAME:ADT
+DTSTART:19940403T020000
+RDATE:19940403T020000
+RDATE:19930404T020000
+RDATE:19920405T020000
+RDATE:19910407T020000
+RDATE:19900401T020000
+RDATE:19890402T020000
+RDATE:19880403T020000
+RDATE:19870405T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19190525T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
@@ -95,51 +122,24 @@ RDATE:19651031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19950402T020000
-RDATE:19950402T020000
+TZOFFSETTO:-0200
+TZNAME:ADDT
+DTSTART:19650425T000000
+RDATE:19650425T000000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19951029T020000
-RDATE:19951029T020000
-RDATE:19961027T020000
-RDATE:19971026T020000
-RDATE:19981025T020000
-END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19960407T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
-RDATE:19990404T020000
-END:DAYLIGHT
-BEGIN:STANDARD
 TZOFFSETFROM:-0400
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19991031T020000
-RDATE:19991031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
+TZOFFSETTO:-0300
+TZNAME:AWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
+TZOFFSETFROM:-0423
+TZOFFSETTO:-0400
+TZNAME:AST
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Paramaribo.ics b/libical/zoneinfo/America/Paramaribo.ics
index 8de7f644fc..2a3b3e1e2b 100644
--- a/libical/zoneinfo/America/Paramaribo.ics
+++ b/libical/zoneinfo/America/Paramaribo.ics
@@ -2,22 +2,14 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Paramaribo
+TZID:/softwarestudio.org/Olson_20011022_4/America/Paramaribo
 X-LIC-LOCATION:America/Paramaribo
 BEGIN:STANDARD
-TZOFFSETFROM:-0341
-TZOFFSETTO:-0341
-TZNAME:PMT
-DTSTART:19110101T000000
-RDATE:19110101T000000
-RDATE:19350101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0341
-TZOFFSETTO:-0330
-TZNAME:NEGT
-DTSTART:19451001T000000
-RDATE:19451001T000000
+TZOFFSETFROM:-0330
+TZOFFSETTO:-0300
+TZNAME:SRT
+DTSTART:19841001T000000
+RDATE:19841001T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0330
@@ -27,11 +19,19 @@ DTSTART:19751120T000000
 RDATE:19751120T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0300
-TZNAME:SRT
-DTSTART:19841001T000000
-RDATE:19841001T000000
+TZOFFSETFROM:-0341
+TZOFFSETTO:-0330
+TZNAME:NEGT
+DTSTART:19451001T000000
+RDATE:19451001T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0341
+TZOFFSETTO:-0341
+TZNAME:PMT
+DTSTART:19350101T000000
+RDATE:19350101T000000
+RDATE:19110101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Phoenix.ics b/libical/zoneinfo/America/Phoenix.ics
index 142d3eb44c..f544096537 100644
--- a/libical/zoneinfo/America/Phoenix.ics
+++ b/libical/zoneinfo/America/Phoenix.ics
@@ -2,50 +2,50 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Phoenix
+TZID:/softwarestudio.org/Olson_20011022_4/America/Phoenix
 X-LIC-LOCATION:America/Phoenix
 BEGIN:STANDARD
-TZOFFSETFROM:-0728
+TZOFFSETFROM:-0700
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+DTSTART:19680101T000000
+RDATE:19680101T000000
+RDATE:19670101T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19670430T020000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19440101T000100
+DTSTART:19671029T020000
 RDATE:19671029T020000
+RDATE:19441001T000100
+RDATE:19440101T000100
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
+TZNAME:MDT
+DTSTART:19670430T020000
+RDATE:19670430T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0600
 TZNAME:MWT
-DTSTART:19420209T020000
+DTSTART:19440317T000100
+RDATE:19440317T000100
 RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
+TZOFFSETFROM:-0728
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19440317T000100
-RDATE:19440317T000100
-RDATE:19441001T000100
-RDATE:19670101T000000
-RDATE:19680101T000000
+DTSTART:18831118T120000
+RDATE:18831118T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Port-au-Prince.ics b/libical/zoneinfo/America/Port-au-Prince.ics
index 1247808003..fb67aea0fc 100644
--- a/libical/zoneinfo/America/Port-au-Prince.ics
+++ b/libical/zoneinfo/America/Port-au-Prince.ics
@@ -2,63 +2,63 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Port-au-Prince
+TZID:/softwarestudio.org/Olson_20011022_4/America/Port-au-Prince
 X-LIC-LOCATION:America/Port-au-Prince
 BEGIN:STANDARD
-TZOFFSETFROM:-0449
-TZOFFSETTO:-0449
-TZNAME:PPMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0449
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19170124T120000
-RDATE:19170124T120000
+DTSTART:19971026T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19951029T020000
+RDATE:19941030T020000
+RDATE:19931031T020000
+RDATE:19921025T020000
+RDATE:19911027T020000
+RDATE:19901028T020000
+RDATE:19891029T020000
+RDATE:19881030T020000
+RDATE:19871025T000000
+RDATE:19861026T000000
+RDATE:19851027T000000
+RDATE:19841028T000000
+RDATE:19831030T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19830508T000000
-RDATE:19830508T000000
-RDATE:19840429T000000
-RDATE:19850428T000000
-RDATE:19860427T000000
-RDATE:19870426T000000
-RDATE:19880403T010000
-RDATE:19890402T010000
-RDATE:19900401T010000
-RDATE:19910407T010000
-RDATE:19920405T010000
-RDATE:19930404T010000
-RDATE:19940403T010000
-RDATE:19950402T010000
-RDATE:19960407T010000
+DTSTART:19970406T010000
 RDATE:19970406T010000
+RDATE:19960407T010000
+RDATE:19950402T010000
+RDATE:19940403T010000
+RDATE:19930404T010000
+RDATE:19920405T010000
+RDATE:19910407T010000
+RDATE:19900401T010000
+RDATE:19890402T010000
+RDATE:19880403T010000
+RDATE:19870426T000000
+RDATE:19860427T000000
+RDATE:19850428T000000
+RDATE:19840429T000000
+RDATE:19830508T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0449
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19831030T000000
-RDATE:19831030T000000
-RDATE:19841028T000000
-RDATE:19851027T000000
-RDATE:19861026T000000
-RDATE:19871025T000000
-RDATE:19881030T020000
-RDATE:19891029T020000
-RDATE:19901028T020000
-RDATE:19911027T020000
-RDATE:19921025T020000
-RDATE:19931031T020000
-RDATE:19941030T020000
-RDATE:19951029T020000
-RDATE:19961027T020000
-RDATE:19971026T020000
+DTSTART:19170124T120000
+RDATE:19170124T120000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0449
+TZOFFSETTO:-0449
+TZNAME:PPMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Porto_Velho.ics b/libical/zoneinfo/America/Porto_Velho.ics
index 5a98dd333f..345b789d58 100644
--- a/libical/zoneinfo/America/Porto_Velho.ics
+++ b/libical/zoneinfo/America/Porto_Velho.ics
@@ -2,61 +2,61 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Porto_Velho
+TZID:/softwarestudio.org/Olson_20011022_4/America/Porto_Velho
 X-LIC-LOCATION:America/Porto_Velho
 BEGIN:STANDARD
-TZOFFSETFROM:-0416
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19880912T000000
+RDATE:19880912T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AMST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
+DTSTART:19880207T000000
 RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
+TZOFFSETTO:-0300
+TZNAME:AMST
+DTSTART:19871025T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0416
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19880912T000000
-RDATE:19880912T000000
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Puerto_Rico.ics b/libical/zoneinfo/America/Puerto_Rico.ics
index 810d470747..d85ee58eb6 100644
--- a/libical/zoneinfo/America/Puerto_Rico.ics
+++ b/libical/zoneinfo/America/Puerto_Rico.ics
@@ -2,14 +2,14 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Puerto_Rico
+TZID:/softwarestudio.org/Olson_20011022_4/America/Puerto_Rico
 X-LIC-LOCATION:America/Puerto_Rico
 BEGIN:STANDARD
-TZOFFSETFROM:-0424
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:18990328T120000
-RDATE:18990328T120000
+DTSTART:19450930T020000
+RDATE:19450930T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
@@ -19,11 +19,11 @@ DTSTART:19420503T000000
 RDATE:19420503T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0424
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19450930T020000
-RDATE:19450930T020000
+DTSTART:18990328T120000
+RDATE:18990328T120000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Rainy_River.ics b/libical/zoneinfo/America/Rainy_River.ics
index c45cbe4d00..7a61f37f9a 100644
--- a/libical/zoneinfo/America/Rainy_River.ics
+++ b/libical/zoneinfo/America/Rainy_River.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Rainy_River
+TZID:/softwarestudio.org/Olson_20011022_4/America/Rainy_River
 X-LIC-LOCATION:America/Rainy_River
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
@@ -18,40 +18,33 @@ TZNAME:CDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0618
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181031T020000
-RDATE:19181031T020000
+DTSTART:19450930T020000
 RDATE:19450930T020000
+RDATE:19181031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
@@ -60,5 +53,12 @@ TZNAME:CWT
 DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0618
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18950101T000000
+RDATE:18950101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Rankin_Inlet.ics b/libical/zoneinfo/America/Rankin_Inlet.ics
index 2ebb9adcfa..bf08744c66 100644
--- a/libical/zoneinfo/America/Rankin_Inlet.ics
+++ b/libical/zoneinfo/America/Rankin_Inlet.ics
@@ -2,8 +2,15 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Rankin_Inlet
+TZID:/softwarestudio.org/Olson_20011022_4/America/Rankin_Inlet
 X-LIC-LOCATION:America/Rankin_Inlet
+BEGIN:STANDARD
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:20011028T020000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
@@ -11,93 +18,78 @@ TZNAME:CDT
 DTSTART:20020407T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:20021027T020000
-RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
-END:STANDARD
+TZOFFSETTO:-0500
+TZNAME:CDT
+DTSTART:20010401T020000
+RDATE:20010401T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0609
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18840101T000000
-RDATE:18840101T000000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:20001029T020000
+RDATE:20001029T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19190525T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-RDATE:19870405T020000
-RDATE:19880403T020000
-RDATE:19890402T020000
-RDATE:19900401T020000
-RDATE:19910407T020000
-RDATE:19920405T020000
-RDATE:19930404T020000
-RDATE:19940403T020000
-RDATE:19950402T020000
-RDATE:19960407T020000
-RDATE:19970406T020000
-RDATE:19980405T020000
-RDATE:19990404T020000
+DTSTART:20000402T020000
 RDATE:20000402T020000
+RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+RDATE:19950402T020000
+RDATE:19940403T020000
+RDATE:19930404T020000
+RDATE:19920405T020000
+RDATE:19910407T020000
+RDATE:19900401T020000
+RDATE:19890402T020000
+RDATE:19880403T020000
+RDATE:19870405T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19190525T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191101T000000
-RDATE:19450930T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
-RDATE:19841028T020000
-RDATE:19851027T020000
-RDATE:19861026T020000
-RDATE:19871025T020000
-RDATE:19881030T020000
-RDATE:19891029T020000
-RDATE:19901028T020000
-RDATE:19911027T020000
-RDATE:19921025T020000
-RDATE:19931031T020000
-RDATE:19941030T020000
-RDATE:19951029T020000
-RDATE:19961027T020000
-RDATE:19971026T020000
-RDATE:19981025T020000
+DTSTART:19991031T020000
 RDATE:19991031T020000
-RDATE:20010401T030000
+RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19951029T020000
+RDATE:19941030T020000
+RDATE:19931031T020000
+RDATE:19921025T020000
+RDATE:19911027T020000
+RDATE:19901028T020000
+RDATE:19891029T020000
+RDATE:19881030T020000
+RDATE:19871025T020000
+RDATE:19861026T020000
+RDATE:19851027T020000
+RDATE:19841028T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19450930T020000
+RDATE:19191101T000000
+RDATE:19181027T020000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0400
-TZNAME:CDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0600
@@ -105,19 +97,26 @@ TZNAME:CST
 DTSTART:19651031T020000
 RDATE:19651031T020000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
+TZOFFSETTO:-0400
+TZNAME:CDDT
+DTSTART:19650425T000000
+RDATE:19650425T000000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-END:STANDARD
+TZNAME:CWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0609
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:20011028T020000
-RDATE:20011028T020000
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Recife.ics b/libical/zoneinfo/America/Recife.ics
index 9765636487..47085761cc 100644
--- a/libical/zoneinfo/America/Recife.ics
+++ b/libical/zoneinfo/America/Recife.ics
@@ -2,70 +2,84 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Recife
+TZID:/softwarestudio.org/Olson_20011022_4/America/Recife
 X-LIC-LOCATION:America/Recife
-BEGIN:STANDARD
-TZOFFSETFROM:-0220
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881016T000000
-RDATE:19891015T000000
-RDATE:19991003T000000
-RDATE:20001008T000000
+DTSTART:20001008T000000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
-RDATE:19890129T000000
-RDATE:19900211T000000
-RDATE:20000227T000000
-RDATE:20001015T000000
+DTSTART:20020217T000000
+RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19900917T000000
-RDATE:19900917T000000
+DTSTART:20010913T000000
+RDATE:20010913T000000
 RDATE:19990930T000000
+RDATE:19900917T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0200
+TZOFFSETTO:-0300
+TZNAME:BRT
+DTSTART:20001015T000000
+RDATE:20001015T000000
+RDATE:20000227T000000
+RDATE:19900211T000000
+RDATE:19890129T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0200
+TZNAME:BRST
+DTSTART:19991003T000000
+RDATE:19991003T000000
+RDATE:19891015T000000
+RDATE:19881016T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0220
+TZOFFSETTO:-0300
+TZNAME:BRT
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Regina.ics b/libical/zoneinfo/America/Regina.ics
index 2b5eb4a344..464c610b2d 100644
--- a/libical/zoneinfo/America/Regina.ics
+++ b/libical/zoneinfo/America/Regina.ics
@@ -2,78 +2,78 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Regina
+TZID:/softwarestudio.org/Olson_20011022_4/America/Regina
 X-LIC-LOCATION:America/Regina
 BEGIN:STANDARD
-TZOFFSETFROM:-0659
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19600424T020000
+RDATE:19600424T020000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19050901T000000
-RDATE:19050901T000000
+DTSTART:19591025T020000
+RDATE:19591025T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19461013T020000
+RDATE:19450930T020000
+RDATE:19411012T000000
+RDATE:19401013T000000
+RDATE:19391008T000000
+RDATE:19381002T000000
+RDATE:19371010T000000
+RDATE:19341007T000000
+RDATE:19331001T000000
+RDATE:19321002T000000
+RDATE:19311004T000000
+RDATE:19301005T000000
+RDATE:19181031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19300504T000000
-RDATE:19310503T000000
-RDATE:19320501T000000
-RDATE:19330507T000000
-RDATE:19340506T000000
-RDATE:19370411T000000
-RDATE:19380410T000000
-RDATE:19390409T000000
-RDATE:19400414T000000
-RDATE:19410413T000000
-RDATE:19460414T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
+DTSTART:19590426T020000
 RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460414T020000
+RDATE:19410413T000000
+RDATE:19400414T000000
+RDATE:19390409T000000
+RDATE:19380410T000000
+RDATE:19370411T000000
+RDATE:19340506T000000
+RDATE:19330507T000000
+RDATE:19320501T000000
+RDATE:19310503T000000
+RDATE:19300504T000000
+RDATE:19180414T020000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19181031T020000
-RDATE:19181031T020000
-RDATE:19301005T000000
-RDATE:19311004T000000
-RDATE:19321002T000000
-RDATE:19331001T000000
-RDATE:19341007T000000
-RDATE:19371010T000000
-RDATE:19381002T000000
-RDATE:19391008T000000
-RDATE:19401013T000000
-RDATE:19411012T000000
-RDATE:19450930T020000
-RDATE:19461013T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19591025T020000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
@@ -82,11 +82,11 @@ DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19600424T020000
-RDATE:19600424T020000
+TZOFFSETFROM:-0659
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19050901T000000
+RDATE:19050901T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Rio_Branco.ics b/libical/zoneinfo/America/Rio_Branco.ics
index 3b3a06a10d..608d94d790 100644
--- a/libical/zoneinfo/America/Rio_Branco.ics
+++ b/libical/zoneinfo/America/Rio_Branco.ics
@@ -2,61 +2,61 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Rio_Branco
+TZID:/softwarestudio.org/Olson_20011022_4/America/Rio_Branco
 X-LIC-LOCATION:America/Rio_Branco
 BEGIN:STANDARD
-TZOFFSETFROM:-0431
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:ACT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19880912T000000
+RDATE:19880912T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:ACST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631209T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:ACT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
-RDATE:19640301T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
+DTSTART:19880207T000000
 RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:ACST
+DTSTART:19871025T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631209T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0431
 TZOFFSETTO:-0500
 TZNAME:ACT
-DTSTART:19880912T000000
-RDATE:19880912T000000
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Rosario.ics b/libical/zoneinfo/America/Rosario.ics
index d3d2820cc0..a23f9ba5f3 100644
--- a/libical/zoneinfo/America/Rosario.ics
+++ b/libical/zoneinfo/America/Rosario.ics
@@ -2,127 +2,127 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Rosario
+TZID:/softwarestudio.org/Olson_20011022_4/America/Rosario
 X-LIC-LOCATION:America/Rosario
 BEGIN:STANDARD
-TZOFFSETFROM:-0403
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
+DTSTART:20000303T000000
+RDATE:20000303T000000
+RDATE:19910701T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19301201T000000
-RDATE:19301201T000000
-RDATE:19311015T000000
-RDATE:19321101T000000
-RDATE:19331101T000000
-RDATE:19341101T000000
-RDATE:19351101T000000
-RDATE:19361101T000000
-RDATE:19371101T000000
-RDATE:19381101T000000
-RDATE:19391101T000000
-RDATE:19400701T000000
-RDATE:19411015T000000
-RDATE:19431015T000000
-RDATE:19461001T000000
-RDATE:19631215T000000
-RDATE:19641015T000000
-RDATE:19651015T000000
-RDATE:19661015T000000
-RDATE:19671001T000000
-RDATE:19681006T000000
+DTSTART:19991003T000000
+RDATE:19991003T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19310401T000000
-RDATE:19310401T000000
-RDATE:19320301T000000
-RDATE:19330301T000000
-RDATE:19340301T000000
-RDATE:19350301T000000
-RDATE:19360301T000000
-RDATE:19370301T000000
-RDATE:19380301T000000
-RDATE:19390301T000000
-RDATE:19400301T000000
-RDATE:19410615T000000
-RDATE:19430801T000000
-RDATE:19460301T000000
-RDATE:19631001T000000
-RDATE:19640301T000000
-RDATE:19650301T000000
-RDATE:19660301T000000
-RDATE:19670401T000000
-RDATE:19680407T000000
-RDATE:19690406T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
+DTSTART:19910303T000000
+RDATE:19910303T000000
+RDATE:19900304T000000
+RDATE:19890305T000000
+RDATE:19880207T000000
+RDATE:19870213T000000
+RDATE:19860314T000000
+RDATE:19770403T000000
+RDATE:19760404T000000
+RDATE:19750406T000000
+RDATE:19740501T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:ARST
-DTSTART:19740123T000000
-RDATE:19740123T000000
-RDATE:19741006T000000
-RDATE:19751005T000000
-RDATE:19761003T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881201T000000
-RDATE:19891015T000000
+DTSTART:19901021T000000
 RDATE:19901021T000000
+RDATE:19891015T000000
+RDATE:19881201T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19761003T000000
+RDATE:19751005T000000
+RDATE:19741006T000000
+RDATE:19740123T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:19740501T000000
-RDATE:19740501T000000
-RDATE:19750406T000000
-RDATE:19760404T000000
-RDATE:19770403T000000
-RDATE:19860314T000000
-RDATE:19870213T000000
-RDATE:19880207T000000
-RDATE:19890305T000000
-RDATE:19900304T000000
-RDATE:19910303T000000
+DTSTART:19691005T000000
+RDATE:19691005T000000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
+TZOFFSETTO:-0400
 TZNAME:ART
-DTSTART:19910701T000000
-RDATE:19910701T000000
-RDATE:20000303T000000
+DTSTART:19690406T000000
+RDATE:19690406T000000
+RDATE:19680407T000000
+RDATE:19670401T000000
+RDATE:19660301T000000
+RDATE:19650301T000000
+RDATE:19640301T000000
+RDATE:19631001T000000
+RDATE:19460301T000000
+RDATE:19430801T000000
+RDATE:19410615T000000
+RDATE:19400301T000000
+RDATE:19390301T000000
+RDATE:19380301T000000
+RDATE:19370301T000000
+RDATE:19360301T000000
+RDATE:19350301T000000
+RDATE:19340301T000000
+RDATE:19330301T000000
+RDATE:19320301T000000
+RDATE:19310401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
+DTSTART:19681006T000000
+RDATE:19681006T000000
+RDATE:19671001T000000
+RDATE:19661015T000000
+RDATE:19651015T000000
+RDATE:19641015T000000
+RDATE:19631215T000000
+RDATE:19461001T000000
+RDATE:19431015T000000
+RDATE:19411015T000000
+RDATE:19400701T000000
+RDATE:19391101T000000
+RDATE:19381101T000000
+RDATE:19371101T000000
+RDATE:19361101T000000
+RDATE:19351101T000000
+RDATE:19341101T000000
+RDATE:19331101T000000
+RDATE:19321101T000000
+RDATE:19311015T000000
+RDATE:19301201T000000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0417
+TZOFFSETTO:-0400
+TZNAME:ART
+DTSTART:19200501T000000
+RDATE:19200501T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0403
+TZOFFSETTO:-0417
+TZNAME:CMT
+DTSTART:18941101T000000
+RDATE:18941101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Santiago.ics b/libical/zoneinfo/America/Santiago.ics
index 79456ff357..332f100a45 100644
--- a/libical/zoneinfo/America/Santiago.ics
+++ b/libical/zoneinfo/America/Santiago.ics
@@ -2,144 +2,144 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Santiago
+TZID:/softwarestudio.org/Olson_20011022_4/America/Santiago
 X-LIC-LOCATION:America/Santiago
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:CLST
 DTSTART:19991010T000000
-RRULE:FREQ=YEARLY;BYMONTH=10;BYMONTHDAY=9,10,11,12,13,14,15;BYDAY=SU
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:CLT
 DTSTART:20000312T000000
-RRULE:FREQ=YEARLY;BYMONTH=3;BYMONTHDAY=9,10,11,12,13,14,15;BYDAY=SU
+RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0443
-TZOFFSETTO:-0443
-TZNAME:SMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0443
-TZOFFSETTO:-0500
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0400
 TZNAME:CLT
-DTSTART:19100101T000000
-RDATE:19100101T000000
+DTSTART:19990404T000000
+RDATE:19990404T000000
+RDATE:19980315T000000
+RDATE:19970309T000000
+RDATE:19960310T000000
+RDATE:19950312T000000
+RDATE:19940313T000000
+RDATE:19930314T000000
+RDATE:19920315T000000
+RDATE:19910310T000000
+RDATE:19900311T000000
+RDATE:19890312T000000
+RDATE:19880313T000000
+RDATE:19870315T000000
+RDATE:19860309T000000
+RDATE:19850310T000000
+RDATE:19840311T000000
+RDATE:19830313T000000
+RDATE:19820314T000000
+RDATE:19810315T000000
+RDATE:19800309T000000
+RDATE:19790311T000000
+RDATE:19780312T000000
+RDATE:19770313T000000
+RDATE:19760314T000000
+RDATE:19750309T000000
+RDATE:19740310T000000
+RDATE:19730311T000000
+RDATE:19720312T000000
+RDATE:19710314T000000
+RDATE:19700315T000000
+RDATE:19690309T000000
+RDATE:19680310T000000
+RDATE:19670312T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0300
 TZNAME:CLST
-DTSTART:19180901T000000
-RDATE:19180901T000000
-RDATE:19270901T000000
-RDATE:19280901T000000
-RDATE:19290901T000000
-RDATE:19300901T000000
-RDATE:19310901T000000
+DTSTART:19980927T000000
+RDATE:19980927T000000
+RDATE:19971012T000000
+RDATE:19961013T000000
+RDATE:19951015T000000
+RDATE:19941009T000000
+RDATE:19931010T000000
+RDATE:19921011T000000
+RDATE:19911013T000000
+RDATE:19901014T000000
+RDATE:19891015T000000
+RDATE:19881009T000000
+RDATE:19871011T000000
+RDATE:19861012T000000
+RDATE:19851013T000000
+RDATE:19841014T000000
+RDATE:19831009T000000
+RDATE:19821010T000000
+RDATE:19811011T000000
+RDATE:19801012T000000
+RDATE:19791014T000000
+RDATE:19781015T000000
+RDATE:19771009T000000
+RDATE:19761010T000000
+RDATE:19751012T000000
+RDATE:19741013T000000
+RDATE:19731014T000000
+RDATE:19721015T000000
+RDATE:19711010T000000
+RDATE:19701011T000000
+RDATE:19691012T000000
+RDATE:19681013T000000
+RDATE:19671015T000000
+RDATE:19661009T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:CLT
-DTSTART:19190702T000000
-RDATE:19190702T000000
-RDATE:19280401T000000
-RDATE:19290401T000000
-RDATE:19300401T000000
-RDATE:19310401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:CLT
 DTSTART:19320901T000000
 RDATE:19320901T000000
 END:STANDARD
-BEGIN:DAYLIGHT
+BEGIN:STANDARD
 TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
+TZOFFSETTO:-0500
+TZNAME:CLT
+DTSTART:19320401T000000
+RDATE:19320401T000000
+RDATE:19310401T000000
+RDATE:19300401T000000
+RDATE:19290401T000000
+RDATE:19280401T000000
+RDATE:19190702T000000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
 TZNAME:CLST
-DTSTART:19661009T000000
-RDATE:19661009T000000
-RDATE:19671015T000000
-RDATE:19681013T000000
-RDATE:19691012T000000
-RDATE:19701011T000000
-RDATE:19711010T000000
-RDATE:19721015T000000
-RDATE:19731014T000000
-RDATE:19741013T000000
-RDATE:19751012T000000
-RDATE:19761010T000000
-RDATE:19771009T000000
-RDATE:19781015T000000
-RDATE:19791014T000000
-RDATE:19801012T000000
-RDATE:19811011T000000
-RDATE:19821010T000000
-RDATE:19831009T000000
-RDATE:19841014T000000
-RDATE:19851013T000000
-RDATE:19861012T000000
-RDATE:19871011T000000
-RDATE:19881009T000000
-RDATE:19891015T000000
-RDATE:19901014T000000
-RDATE:19911013T000000
-RDATE:19921011T000000
-RDATE:19931010T000000
-RDATE:19941009T000000
-RDATE:19951015T000000
-RDATE:19961013T000000
-RDATE:19971012T000000
-RDATE:19980927T000000
+DTSTART:19310901T000000
+RDATE:19310901T000000
+RDATE:19300901T000000
+RDATE:19290901T000000
+RDATE:19280901T000000
+RDATE:19270901T000000
+RDATE:19180901T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
+TZOFFSETFROM:-0443
+TZOFFSETTO:-0500
 TZNAME:CLT
-DTSTART:19670312T000000
-RDATE:19670312T000000
-RDATE:19680310T000000
-RDATE:19690309T000000
-RDATE:19700315T000000
-RDATE:19710314T000000
-RDATE:19720312T000000
-RDATE:19730311T000000
-RDATE:19740310T000000
-RDATE:19750309T000000
-RDATE:19760314T000000
-RDATE:19770313T000000
-RDATE:19780312T000000
-RDATE:19790311T000000
-RDATE:19800309T000000
-RDATE:19810315T000000
-RDATE:19820314T000000
-RDATE:19830313T000000
-RDATE:19840311T000000
-RDATE:19850310T000000
-RDATE:19860309T000000
-RDATE:19870315T000000
-RDATE:19880313T000000
-RDATE:19890312T000000
-RDATE:19900311T000000
-RDATE:19910310T000000
-RDATE:19920315T000000
-RDATE:19930314T000000
-RDATE:19940313T000000
-RDATE:19950312T000000
-RDATE:19960310T000000
-RDATE:19970309T000000
-RDATE:19980315T000000
-RDATE:19990404T000000
+DTSTART:19100101T000000
+RDATE:19100101T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0443
+TZOFFSETTO:-0443
+TZNAME:SMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Santo_Domingo.ics b/libical/zoneinfo/America/Santo_Domingo.ics
index 0bc0803690..7a1d0cb263 100644
--- a/libical/zoneinfo/America/Santo_Domingo.ics
+++ b/libical/zoneinfo/America/Santo_Domingo.ics
@@ -2,66 +2,66 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Santo_Domingo
+TZID:/softwarestudio.org/Olson_20011022_4/America/Santo_Domingo
 X-LIC-LOCATION:America/Santo_Domingo
 BEGIN:STANDARD
-TZOFFSETFROM:-0440
-TZOFFSETTO:-0440
-TZNAME:SDMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:AST
+DTSTART:20001203T010000
+RDATE:20001203T010000
+RDATE:19741027T000000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0440
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19330401T120000
-RDATE:19330401T120000
+DTSTART:20001029T020000
+RDATE:20001029T020000
+RDATE:19670228T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19661030T000000
-RDATE:19661030T000000
-END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0430
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19670228T000000
-RDATE:19670228T000000
-RDATE:20001029T020000
+DTSTART:19740121T000000
+RDATE:19740121T000000
+RDATE:19730121T000000
+RDATE:19720121T000000
+RDATE:19710120T000000
+RDATE:19700221T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0430
 TZNAME:EHDT
-DTSTART:19691026T000000
-RDATE:19691026T000000
-RDATE:19701025T000000
-RDATE:19711031T000000
-RDATE:19721029T000000
+DTSTART:19731028T000000
 RDATE:19731028T000000
+RDATE:19721029T000000
+RDATE:19711031T000000
+RDATE:19701025T000000
+RDATE:19691026T000000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0400
+TZNAME:EDT
+DTSTART:19661030T000000
+RDATE:19661030T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0430
+TZOFFSETFROM:-0440
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19700221T000000
-RDATE:19700221T000000
-RDATE:19710120T000000
-RDATE:19720121T000000
-RDATE:19730121T000000
-RDATE:19740121T000000
+DTSTART:19330401T120000
+RDATE:19330401T120000
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19741027T000000
-RDATE:19741027T000000
-RDATE:20001203T010000
+TZOFFSETFROM:-0440
+TZOFFSETTO:-0440
+TZNAME:SDMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Sao_Paulo.ics b/libical/zoneinfo/America/Sao_Paulo.ics
index 795d01289f..0ee6cb277d 100644
--- a/libical/zoneinfo/America/Sao_Paulo.ics
+++ b/libical/zoneinfo/America/Sao_Paulo.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Sao_Paulo
+TZID:/softwarestudio.org/Olson_20011022_4/America/Sao_Paulo
 X-LIC-LOCATION:America/Sao_Paulo
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
@@ -19,82 +19,82 @@ DTSTART:20010218T000000
 RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0306
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:20000227T000000
+RDATE:20000227T000000
+RDATE:19990221T000000
+RDATE:19980301T000000
+RDATE:19970216T000000
+RDATE:19960211T000000
+RDATE:19950219T000000
+RDATE:19940220T000000
+RDATE:19930131T000000
+RDATE:19920209T000000
+RDATE:19910217T000000
+RDATE:19900211T000000
+RDATE:19890129T000000
+RDATE:19880207T000000
+RDATE:19870214T000000
+RDATE:19860315T000000
+RDATE:19680301T000000
+RDATE:19670301T000000
+RDATE:19660301T000000
+RDATE:19650331T000000
+RDATE:19640301T000000
+RDATE:19530301T000000
+RDATE:19520401T000000
+RDATE:19510401T000000
+RDATE:19500416T010000
+RDATE:19330401T000000
+RDATE:19320401T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:19311003T110000
-RDATE:19311003T110000
-RDATE:19321003T000000
-RDATE:19491201T000000
-RDATE:19501201T000000
-RDATE:19511201T000000
-RDATE:19521201T000000
-RDATE:19631023T000000
-RDATE:19650131T000000
-RDATE:19651201T000000
-RDATE:19661101T000000
-RDATE:19671101T000000
-RDATE:19851102T000000
-RDATE:19861025T000000
-RDATE:19871025T000000
-RDATE:19881016T000000
-RDATE:19891015T000000
-RDATE:19901021T000000
-RDATE:19911020T000000
-RDATE:19921025T000000
-RDATE:19931017T000000
-RDATE:19941016T000000
-RDATE:19951015T000000
-RDATE:19961006T000000
-RDATE:19971006T000000
-RDATE:19981011T000000
+DTSTART:19991003T000000
 RDATE:19991003T000000
+RDATE:19981011T000000
+RDATE:19971006T000000
+RDATE:19961006T000000
+RDATE:19951015T000000
+RDATE:19941016T000000
+RDATE:19931017T000000
+RDATE:19921025T000000
+RDATE:19911020T000000
+RDATE:19901021T000000
+RDATE:19891015T000000
+RDATE:19881016T000000
+RDATE:19871025T000000
+RDATE:19861025T000000
+RDATE:19851102T000000
+RDATE:19671101T000000
+RDATE:19661101T000000
+RDATE:19651201T000000
+RDATE:19650131T000000
+RDATE:19631023T000000
+RDATE:19521201T000000
+RDATE:19511201T000000
+RDATE:19501201T000000
+RDATE:19491201T000000
+RDATE:19321003T000000
+RDATE:19311003T110000
 END:DAYLIGHT
-BEGIN:STANDARD
+BEGIN:DAYLIGHT
 TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19330401T000000
-RDATE:19500416T010000
-RDATE:19510401T000000
-RDATE:19520401T000000
-RDATE:19530301T000000
+TZOFFSETTO:-0200
+TZNAME:BRST
+DTSTART:19640101T000000
 RDATE:19640101T000000
-RDATE:19650331T000000
-RDATE:19660301T000000
-RDATE:19670301T000000
-RDATE:19680301T000000
-RDATE:19860315T000000
-RDATE:19870214T000000
-RDATE:19880207T000000
-RDATE:19890129T000000
-RDATE:19900211T000000
-RDATE:19910217T000000
-RDATE:19920209T000000
-RDATE:19930131T000000
-RDATE:19940220T000000
-RDATE:19950219T000000
-RDATE:19960211T000000
-RDATE:19970216T000000
-RDATE:19980301T000000
-RDATE:19990221T000000
-RDATE:20000227T000000
-END:STANDARD
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0306
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19640301T000000
-RDATE:19640301T000000
+DTSTART:19140101T000000
+RDATE:19140101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Scoresbysund.ics b/libical/zoneinfo/America/Scoresbysund.ics
index 297c8543e3..c9c4e6e2ff 100644
--- a/libical/zoneinfo/America/Scoresbysund.ics
+++ b/libical/zoneinfo/America/Scoresbysund.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Scoresbysund
+TZID:/softwarestudio.org/Olson_20011022_4/America/Scoresbysund
 X-LIC-LOCATION:America/Scoresbysund
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0100
@@ -19,18 +19,32 @@ DTSTART:19961027T010000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0129
-TZOFFSETTO:-0200
-TZNAME:CGT
-DTSTART:19160728T000000
-RDATE:19160728T000000
+TZOFFSETFROM:+0000
+TZOFFSETTO:-0100
+TZNAME:EGT
+DTSTART:19950924T010000
+RDATE:19950924T010000
+RDATE:19940925T010000
+RDATE:19930926T010000
+RDATE:19920927T010000
+RDATE:19910929T010000
+RDATE:19900930T010000
+RDATE:19890924T010000
+RDATE:19880925T010000
+RDATE:19870927T010000
+RDATE:19860928T010000
+RDATE:19850929T010000
+RDATE:19840930T010000
+RDATE:19830925T010000
+RDATE:19820926T010000
+RDATE:19810927T010000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0200
-TZOFFSETTO:-0100
-TZNAME:CGST
-DTSTART:19800406T020000
-RDATE:19800406T020000
+TZOFFSETTO:+0000
+TZNAME:EGST
+DTSTART:19810329T000000
+RDATE:19810329T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0100
@@ -41,31 +55,17 @@ RDATE:19800928T030000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0200
-TZOFFSETTO:+0000
-TZNAME:EGST
-DTSTART:19810328T230000
-RDATE:19810328T230000
+TZOFFSETTO:-0100
+TZNAME:CGST
+DTSTART:19800406T020000
+RDATE:19800406T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:-0100
-TZNAME:EGT
-DTSTART:19810927T010000
-RDATE:19810927T010000
-RDATE:19820926T010000
-RDATE:19830925T010000
-RDATE:19840930T010000
-RDATE:19850929T010000
-RDATE:19860928T010000
-RDATE:19870927T010000
-RDATE:19880925T010000
-RDATE:19890924T010000
-RDATE:19900930T010000
-RDATE:19910929T010000
-RDATE:19920927T010000
-RDATE:19930926T010000
-RDATE:19940925T010000
-RDATE:19950924T010000
+TZOFFSETFROM:-0129
+TZOFFSETTO:-0200
+TZNAME:CGT
+DTSTART:19160728T000000
+RDATE:19160728T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Shiprock.ics b/libical/zoneinfo/America/Shiprock.ics
index 6bb1df4603..fc83378b30 100644
--- a/libical/zoneinfo/America/Shiprock.ics
+++ b/libical/zoneinfo/America/Shiprock.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Shiprock
+TZID:/softwarestudio.org/Olson_20011022_4/America/Shiprock
 X-LIC-LOCATION:America/Shiprock
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
@@ -18,73 +18,73 @@ TZNAME:MDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-RDATE:19200101T000000
-RDATE:19420101T000000
-RDATE:19460101T000000
-RDATE:19670101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19180331T020000
-RDATE:19180331T020000
-RDATE:19190330T020000
-RDATE:19200328T020000
-RDATE:19210327T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19210327T020000
+RDATE:19200328T020000
+RDATE:19190330T020000
+RDATE:19180331T020000
 END:DAYLIGHT
 BEGIN:STANDARD
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19670101T000000
+RDATE:19670101T000000
+RDATE:19460101T000000
+RDATE:19420101T000000
+RDATE:19200101T000000
+RDATE:18831118T120000
+END:STANDARD
+BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191026T020000
-RDATE:19201031T020000
-RDATE:19210522T020000
+DTSTART:19450930T020000
 RDATE:19450930T020000
+RDATE:19210522T020000
+RDATE:19201031T020000
+RDATE:19191026T020000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
 TZNAME:MPT
 DTSTART:19450814T170000
 RDATE:19450814T170000
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0600
+TZNAME:MWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
+END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/St_Johns.ics b/libical/zoneinfo/America/St_Johns.ics
index 8eb699b7e7..3e636014de 100644
--- a/libical/zoneinfo/America/St_Johns.ics
+++ b/libical/zoneinfo/America/St_Johns.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/St_Johns
+TZID:/softwarestudio.org/Olson_20011022_4/America/St_Johns
 X-LIC-LOCATION:America/St_Johns
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0330
@@ -19,204 +19,204 @@ DTSTART:19891029T000100
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0331
+TZOFFSETFROM:-0130
+TZOFFSETTO:-0330
 TZNAME:NST
-DTSTART:18840101T000000
-RDATE:18840101T000000
+DTSTART:19881030T000100
+RDATE:19881030T000100
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0231
-TZNAME:NDT
-DTSTART:19170408T020000
-RDATE:19170408T020000
-RDATE:19180414T020000
-RDATE:19190505T230000
-RDATE:19200502T230000
-RDATE:19210501T230000
-RDATE:19220507T230000
-RDATE:19230506T230000
-RDATE:19240504T230000
-RDATE:19250503T230000
-RDATE:19260502T230000
-RDATE:19270501T230000
-RDATE:19280506T230000
-RDATE:19290505T230000
-RDATE:19300504T230000
-RDATE:19310503T230000
-RDATE:19320501T230000
-RDATE:19330507T230000
-RDATE:19340506T230000
+TZOFFSETFROM:-0330
+TZOFFSETTO:-0130
+TZNAME:NDDT
+DTSTART:19880403T000100
+RDATE:19880403T000100
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0231
-TZOFFSETTO:-0331
-TZNAME:NST
-DTSTART:19170917T020000
-RDATE:19170917T020000
-RDATE:19181031T020000
-RDATE:19190812T230000
-RDATE:19201031T230000
-RDATE:19211030T230000
-RDATE:19221029T230000
-RDATE:19231028T230000
-RDATE:19241026T230000
-RDATE:19251025T230000
-RDATE:19261031T230000
-RDATE:19271030T230000
-RDATE:19281028T230000
-RDATE:19291027T230000
-RDATE:19301026T230000
-RDATE:19311025T230000
-RDATE:19321030T230000
-RDATE:19331029T230000
-RDATE:19341028T230000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0331
+TZOFFSETFROM:-0230
 TZOFFSETTO:-0330
 TZNAME:NST
-DTSTART:19350330T000000
-RDATE:19350330T000000
+DTSTART:19871025T000100
+RDATE:19871025T000100
+RDATE:19861026T020000
+RDATE:19851027T020000
+RDATE:19841028T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19681027T020000
+RDATE:19671029T020000
+RDATE:19661030T020000
+RDATE:19651031T020000
+RDATE:19641025T020000
+RDATE:19631027T020000
+RDATE:19621028T020000
+RDATE:19611029T020000
+RDATE:19601030T020000
+RDATE:19590927T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19501008T020000
+RDATE:19491002T020000
+RDATE:19481003T020000
+RDATE:19471005T020000
+RDATE:19461006T020000
+RDATE:19451007T020000
+RDATE:19440902T000000
+RDATE:19430905T000000
+RDATE:19421231T000000
+RDATE:19411005T000000
+RDATE:19401006T000000
+RDATE:19391001T000000
+RDATE:19381002T000000
+RDATE:19371003T000000
+RDATE:19361004T000000
+RDATE:19351027T230000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0330
 TZOFFSETTO:-0230
 TZNAME:NDT
-DTSTART:19350505T230000
-RDATE:19350505T230000
-RDATE:19360510T000000
-RDATE:19370509T000000
-RDATE:19380508T000000
-RDATE:19390514T000000
-RDATE:19400512T000000
-RDATE:19410511T000000
-RDATE:19460512T020000
-RDATE:19470511T020000
-RDATE:19480509T020000
-RDATE:19490508T020000
-RDATE:19500514T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19610430T020000
-RDATE:19620429T020000
-RDATE:19630428T020000
-RDATE:19640426T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
+DTSTART:19870405T000100
 RDATE:19870405T000100
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19640426T020000
+RDATE:19630428T020000
+RDATE:19620429T020000
+RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500514T020000
+RDATE:19490508T020000
+RDATE:19480509T020000
+RDATE:19470511T020000
+RDATE:19460512T020000
+RDATE:19410511T000000
+RDATE:19400512T000000
+RDATE:19390514T000000
+RDATE:19380508T000000
+RDATE:19370509T000000
+RDATE:19360510T000000
+RDATE:19350505T230000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0230
-TZOFFSETTO:-0330
-TZNAME:NST
-DTSTART:19351027T230000
-RDATE:19351027T230000
-RDATE:19361004T000000
-RDATE:19371003T000000
-RDATE:19381002T000000
-RDATE:19391001T000000
-RDATE:19401006T000000
-RDATE:19411005T000000
-RDATE:19421231T000000
-RDATE:19430905T000000
-RDATE:19440902T000000
-RDATE:19451007T020000
-RDATE:19461006T020000
-RDATE:19471005T020000
-RDATE:19481003T020000
-RDATE:19491002T020000
-RDATE:19501008T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19590927T020000
-RDATE:19601030T020000
-RDATE:19611029T020000
-RDATE:19621028T020000
-RDATE:19631027T020000
-RDATE:19641025T020000
-RDATE:19651031T020000
-RDATE:19661030T020000
-RDATE:19671029T020000
-RDATE:19681027T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
-RDATE:19841028T020000
-RDATE:19851027T020000
-RDATE:19861026T020000
-RDATE:19871025T000100
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0330
 TZOFFSETTO:-0230
 TZNAME:NWT
-DTSTART:19420301T000000
-RDATE:19420301T000000
-RDATE:19430530T000000
-RDATE:19440710T000000
+DTSTART:19450101T000000
 RDATE:19450101T000000
+RDATE:19440710T000000
+RDATE:19430530T000000
+RDATE:19420301T000000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0331
+TZOFFSETTO:-0330
+TZNAME:NST
+DTSTART:19350330T000000
+RDATE:19350330T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0231
+TZOFFSETTO:-0331
+TZNAME:NST
+DTSTART:19341028T230000
+RDATE:19341028T230000
+RDATE:19331029T230000
+RDATE:19321030T230000
+RDATE:19311025T230000
+RDATE:19301026T230000
+RDATE:19291027T230000
+RDATE:19281028T230000
+RDATE:19271030T230000
+RDATE:19261031T230000
+RDATE:19251025T230000
+RDATE:19241026T230000
+RDATE:19231028T230000
+RDATE:19221029T230000
+RDATE:19211030T230000
+RDATE:19201031T230000
+RDATE:19190812T230000
+RDATE:19181031T020000
+RDATE:19170917T020000
+END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0130
-TZNAME:NDDT
-DTSTART:19880403T000100
-RDATE:19880403T000100
+TZOFFSETFROM:-0331
+TZOFFSETTO:-0231
+TZNAME:NDT
+DTSTART:19340506T230000
+RDATE:19340506T230000
+RDATE:19330507T230000
+RDATE:19320501T230000
+RDATE:19310503T230000
+RDATE:19300504T230000
+RDATE:19290505T230000
+RDATE:19280506T230000
+RDATE:19270501T230000
+RDATE:19260502T230000
+RDATE:19250503T230000
+RDATE:19240504T230000
+RDATE:19230506T230000
+RDATE:19220507T230000
+RDATE:19210501T230000
+RDATE:19200502T230000
+RDATE:19190505T230000
+RDATE:19180414T020000
+RDATE:19170408T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0130
-TZOFFSETTO:-0330
+TZOFFSETFROM:-0331
+TZOFFSETTO:-0331
 TZNAME:NST
-DTSTART:19881030T000100
-RDATE:19881030T000100
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/St_Lucia.ics b/libical/zoneinfo/America/St_Lucia.ics
index 1d0a652fe5..32ae044af0 100644
--- a/libical/zoneinfo/America/St_Lucia.ics
+++ b/libical/zoneinfo/America/St_Lucia.ics
@@ -2,21 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/St_Lucia
+TZID:/softwarestudio.org/Olson_20011022_4/America/St_Lucia
 X-LIC-LOCATION:America/St_Lucia
 BEGIN:STANDARD
 TZOFFSETFROM:-0404
-TZOFFSETTO:-0404
-TZNAME:CMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0404
 TZOFFSETTO:-0400
 TZNAME:AST
 DTSTART:19120101T000000
 RDATE:19120101T000000
 END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0404
+TZOFFSETTO:-0404
+TZNAME:CMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/St_Vincent.ics b/libical/zoneinfo/America/St_Vincent.ics
index f45b9703c8..829641665c 100644
--- a/libical/zoneinfo/America/St_Vincent.ics
+++ b/libical/zoneinfo/America/St_Vincent.ics
@@ -2,21 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/St_Vincent
+TZID:/softwarestudio.org/Olson_20011022_4/America/St_Vincent
 X-LIC-LOCATION:America/St_Vincent
 BEGIN:STANDARD
 TZOFFSETFROM:-0405
-TZOFFSETTO:-0405
-TZNAME:KMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0405
 TZOFFSETTO:-0400
 TZNAME:AST
 DTSTART:19120101T000000
 RDATE:19120101T000000
 END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0405
+TZOFFSETTO:-0405
+TZNAME:KMT
+DTSTART:18900101T000000
+RDATE:18900101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Swift_Current.ics b/libical/zoneinfo/America/Swift_Current.ics
index 9d3e4ebb38..3474e85d00 100644
--- a/libical/zoneinfo/America/Swift_Current.ics
+++ b/libical/zoneinfo/America/Swift_Current.ics
@@ -2,43 +2,52 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Swift_Current
+TZID:/softwarestudio.org/Olson_20011022_4/America/Swift_Current
 X-LIC-LOCATION:America/Swift_Current
 BEGIN:STANDARD
-TZOFFSETFROM:-0711
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:19720430T020000
+RDATE:19720430T020000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19050901T000000
-RDATE:19050901T000000
+DTSTART:19610924T020000
+RDATE:19610924T020000
+RDATE:19600925T020000
+RDATE:19591025T020000
+RDATE:19571027T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19461013T020000
+RDATE:19450930T020000
+RDATE:19181031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19570428T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
+DTSTART:19610430T020000
 RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19570428T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460428T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0600
+TZOFFSETFROM:-0700
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19181031T020000
-RDATE:19181031T020000
-RDATE:19450930T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19571027T020000
-RDATE:19591025T020000
-RDATE:19600925T020000
-RDATE:19610924T020000
+DTSTART:19500101T000000
+RDATE:19500101T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
@@ -48,20 +57,11 @@ DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
+TZOFFSETFROM:-0711
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19460428T020000
-RDATE:19460428T020000
-RDATE:19461013T020000
-RDATE:19500101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19720430T020000
-RDATE:19720430T020000
+DTSTART:19050901T000000
+RDATE:19050901T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Tegucigalpa.ics b/libical/zoneinfo/America/Tegucigalpa.ics
index 2e13540d7d..4adffd88ba 100644
--- a/libical/zoneinfo/America/Tegucigalpa.ics
+++ b/libical/zoneinfo/America/Tegucigalpa.ics
@@ -2,30 +2,30 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Tegucigalpa
+TZID:/softwarestudio.org/Olson_20011022_4/America/Tegucigalpa
 X-LIC-LOCATION:America/Tegucigalpa
 BEGIN:STANDARD
-TZOFFSETFROM:-0549
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19210401T000000
-RDATE:19210401T000000
+DTSTART:19880925T000000
+RDATE:19880925T000000
+RDATE:19870927T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19870503T000000
-RDATE:19870503T000000
+DTSTART:19880501T000000
 RDATE:19880501T000000
+RDATE:19870503T000000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0549
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19870927T000000
-RDATE:19870927T000000
-RDATE:19880925T000000
+DTSTART:19210401T000000
+RDATE:19210401T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Thule.ics b/libical/zoneinfo/America/Thule.ics
index 548dcb8841..5dd92adbbc 100644
--- a/libical/zoneinfo/America/Thule.ics
+++ b/libical/zoneinfo/America/Thule.ics
@@ -2,22 +2,36 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Thule
+TZID:/softwarestudio.org/Olson_20011022_4/America/Thule
 X-LIC-LOCATION:America/Thule
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19930404T020000
-RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
-END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19931031T020000
-RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+DTSTART:20001029T020000
+RDATE:20001029T020000
+RDATE:19991031T020000
+RDATE:19981025T020000
+RDATE:19971026T020000
+RDATE:19961027T020000
+RDATE:19951029T020000
+RDATE:19941030T020000
+RDATE:19931031T020000
 END:STANDARD
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0400
+TZOFFSETTO:-0300
+TZNAME:ADT
+DTSTART:20000402T020000
+RDATE:20000402T020000
+RDATE:19990404T020000
+RDATE:19980405T020000
+RDATE:19970406T020000
+RDATE:19960407T020000
+RDATE:19950402T020000
+RDATE:19940403T020000
+RDATE:19930404T020000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0435
 TZOFFSETTO:-0400
diff --git a/libical/zoneinfo/America/Thunder_Bay.ics b/libical/zoneinfo/America/Thunder_Bay.ics
index d2ec74727c..737389a789 100644
--- a/libical/zoneinfo/America/Thunder_Bay.ics
+++ b/libical/zoneinfo/America/Thunder_Bay.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Thunder_Bay
+TZID:/softwarestudio.org/Olson_20011022_4/America/Thunder_Bay
 X-LIC-LOCATION:America/Thunder_Bay
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
@@ -18,46 +18,48 @@ TZNAME:EDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0557
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
+TZOFFSETFROM:-0500
+TZOFFSETTO:-0500
+TZNAME:EST
+DTSTART:19740101T000000
+RDATE:19740101T000000
+RDATE:19730101T000000
+RDATE:19700101T000000
+END:STANDARD
+BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19181031T020000
-RDATE:19181031T020000
-RDATE:19450930T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
+DTSTART:19721029T020000
 RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19450930T020000
+RDATE:19181031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
@@ -67,13 +69,11 @@ DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0557
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19700101T000000
-RDATE:19700101T000000
-RDATE:19730101T000000
-RDATE:19740101T000000
+DTSTART:18950101T000000
+RDATE:18950101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Tijuana.ics b/libical/zoneinfo/America/Tijuana.ics
index 4a8a53a032..7d17bc6059 100644
--- a/libical/zoneinfo/America/Tijuana.ics
+++ b/libical/zoneinfo/America/Tijuana.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Tijuana
+TZID:/softwarestudio.org/Olson_20011022_4/America/Tijuana
 X-LIC-LOCATION:America/Tijuana
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
@@ -19,63 +19,60 @@ DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0748
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19220101T001156
-RDATE:19220101T001156
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
+TZOFFSETFROM:-0800
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19240101T000000
-RDATE:19240101T000000
-RDATE:19301115T000000
-RDATE:19310930T000000
-RDATE:19451112T000000
-RDATE:19490114T000000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19590927T020000
-RDATE:19600925T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19270610T230000
-RDATE:19270610T230000
+DTSTART:20010101T000000
+RDATE:20010101T000000
+RDATE:19960101T000000
+RDATE:19760101T000000
+RDATE:19610101T000000
+RDATE:19540101T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:PDT
-DTSTART:19310401T000000
-RDATE:19310401T000000
-RDATE:19480405T000000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19480405T000000
+RDATE:19310401T000000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0800
+TZNAME:PST
+DTSTART:19600925T020000
+RDATE:19600925T020000
+RDATE:19590927T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19490114T000000
+RDATE:19451112T000000
+RDATE:19310930T000000
+RDATE:19301115T000000
+RDATE:19240101T000000
+END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
@@ -85,14 +82,17 @@ RDATE:19420424T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19540101T000000
-RDATE:19540101T000000
-RDATE:19610101T000000
-RDATE:19760101T000000
-RDATE:19960101T000000
-RDATE:20010101T000000
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19270610T230000
+RDATE:19270610T230000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0748
+TZOFFSETTO:-0700
+TZNAME:MST
+DTSTART:19220101T001156
+RDATE:19220101T001156
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Vancouver.ics b/libical/zoneinfo/America/Vancouver.ics
index d2097010eb..b23dced3b0 100644
--- a/libical/zoneinfo/America/Vancouver.ics
+++ b/libical/zoneinfo/America/Vancouver.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Vancouver
+TZID:/softwarestudio.org/Olson_20011022_4/America/Vancouver
 X-LIC-LOCATION:America/Vancouver
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
@@ -18,84 +18,77 @@ TZNAME:PDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0812
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:PDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19460428T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500430T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19610430T020000
-RDATE:19620429T020000
-RDATE:19630428T020000
-RDATE:19640426T020000
-RDATE:19650425T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19650425T020000
+RDATE:19640426T020000
+RDATE:19630428T020000
+RDATE:19620429T020000
+RDATE:19610430T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500430T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460428T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19181031T020000
-RDATE:19181031T020000
-RDATE:19450930T020000
-RDATE:19461013T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500924T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19590927T020000
-RDATE:19600925T020000
+DTSTART:19610924T020000
 RDATE:19610924T020000
+RDATE:19600925T020000
+RDATE:19590927T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500924T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19461013T020000
+RDATE:19450930T020000
+RDATE:19181031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
@@ -104,5 +97,12 @@ TZNAME:PWT
 DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0812
+TZOFFSETTO:-0800
+TZNAME:PST
+DTSTART:18840101T000000
+RDATE:18840101T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Whitehorse.ics b/libical/zoneinfo/America/Whitehorse.ics
index a3336d186f..89f4a6b74e 100644
--- a/libical/zoneinfo/America/Whitehorse.ics
+++ b/libical/zoneinfo/America/Whitehorse.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Whitehorse
+TZID:/softwarestudio.org/Olson_20011022_4/America/Whitehorse
 X-LIC-LOCATION:America/Whitehorse
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
@@ -18,29 +18,48 @@ TZNAME:PDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0800
+TZOFFSETTO:-0700
+TZNAME:PDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0900
+TZOFFSETTO:-0800
+TZNAME:PST
+DTSTART:19660701T020000
+RDATE:19660701T020000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0700
 TZOFFSETTO:-0900
 TZNAME:YST
-DTSTART:19000820T000000
-RDATE:19000820T000000
+DTSTART:19651031T020000
+RDATE:19651031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:YDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19190525T020000
+TZOFFSETTO:-0700
+TZNAME:YDDT
+DTSTART:19650425T000000
+RDATE:19650425T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0900
 TZNAME:YST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191101T000000
+DTSTART:19450930T020000
 RDATE:19450930T020000
+RDATE:19191101T000000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
@@ -51,37 +70,18 @@ RDATE:19420209T020000
 END:DAYLIGHT
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
-TZOFFSETTO:-0700
-TZNAME:YDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
+TZOFFSETTO:-0800
+TZNAME:YDT
+DTSTART:19190525T020000
+RDATE:19190525T020000
+RDATE:19180414T020000
 END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
+TZOFFSETFROM:-0900
 TZOFFSETTO:-0900
 TZNAME:YST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19660701T020000
-RDATE:19660701T020000
+DTSTART:19000820T000000
+RDATE:19000820T000000
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19800427T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Winnipeg.ics b/libical/zoneinfo/America/Winnipeg.ics
index 53f12b33b4..9ae5252b49 100644
--- a/libical/zoneinfo/America/Winnipeg.ics
+++ b/libical/zoneinfo/America/Winnipeg.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Winnipeg
+TZID:/softwarestudio.org/Olson_20011022_4/America/Winnipeg
 X-LIC-LOCATION:America/Winnipeg
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
@@ -19,105 +19,98 @@ DTSTART:19871025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:STANDARD
-TZOFFSETFROM:-0629
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:18870716T000000
-RDATE:18870716T000000
+DTSTART:19861026T020000
+RDATE:19861026T020000
+RDATE:19851027T020000
+RDATE:19841028T020000
+RDATE:19831030T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19681027T020000
+RDATE:19671029T020000
+RDATE:19661030T020000
+RDATE:19630922T020000
+RDATE:19600925T020000
+RDATE:19591025T020000
+RDATE:19580928T020000
+RDATE:19570929T020000
+RDATE:19560930T020000
+RDATE:19550925T020000
+RDATE:19540926T020000
+RDATE:19530927T020000
+RDATE:19520928T020000
+RDATE:19510930T020000
+RDATE:19500930T020000
+RDATE:19490925T020000
+RDATE:19480926T020000
+RDATE:19470928T020000
+RDATE:19461013T020000
+RDATE:19450930T020000
+RDATE:19370926T020000
+RDATE:19181031T020000
+RDATE:19160917T000000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19160423T000000
-RDATE:19160423T000000
-RDATE:19180414T020000
-RDATE:19370516T020000
-RDATE:19460512T020000
-RDATE:19470427T020000
-RDATE:19480425T020000
-RDATE:19490424T020000
-RDATE:19500501T020000
-RDATE:19510429T020000
-RDATE:19520427T020000
-RDATE:19530426T020000
-RDATE:19540425T020000
-RDATE:19550424T020000
-RDATE:19560429T020000
-RDATE:19570428T020000
-RDATE:19580427T020000
-RDATE:19590426T020000
-RDATE:19600424T020000
-RDATE:19630428T020000
-RDATE:19660424T020000
-RDATE:19670430T020000
-RDATE:19680428T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740428T020000
-RDATE:19750427T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
+DTSTART:19860427T020000
 RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750427T020000
+RDATE:19740428T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+RDATE:19680428T020000
+RDATE:19670430T020000
+RDATE:19660424T020000
+RDATE:19630428T020000
+RDATE:19600424T020000
+RDATE:19590426T020000
+RDATE:19580427T020000
+RDATE:19570428T020000
+RDATE:19560429T020000
+RDATE:19550424T020000
+RDATE:19540425T020000
+RDATE:19530426T020000
+RDATE:19520427T020000
+RDATE:19510429T020000
+RDATE:19500501T020000
+RDATE:19490424T020000
+RDATE:19480425T020000
+RDATE:19470427T020000
+RDATE:19460512T020000
+RDATE:19370516T020000
+RDATE:19180414T020000
+RDATE:19160423T000000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19160917T000000
-RDATE:19160917T000000
-RDATE:19181031T020000
-RDATE:19370926T020000
-RDATE:19450930T020000
-RDATE:19461013T020000
-RDATE:19470928T020000
-RDATE:19480926T020000
-RDATE:19490925T020000
-RDATE:19500930T020000
-RDATE:19510930T020000
-RDATE:19520928T020000
-RDATE:19530927T020000
-RDATE:19540926T020000
-RDATE:19550925T020000
-RDATE:19560930T020000
-RDATE:19570929T020000
-RDATE:19580928T020000
-RDATE:19591025T020000
-RDATE:19600925T020000
-RDATE:19630922T020000
-RDATE:19661030T020000
-RDATE:19671029T020000
-RDATE:19681027T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-RDATE:19831030T020000
-RDATE:19841028T020000
-RDATE:19851027T020000
-RDATE:19861026T020000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
@@ -125,5 +118,12 @@ TZNAME:CWT
 DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0629
+TZOFFSETTO:-0600
+TZNAME:CST
+DTSTART:18870716T000000
+RDATE:18870716T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Yakutat.ics b/libical/zoneinfo/America/Yakutat.ics
index eabe19ab43..3728d1710c 100644
--- a/libical/zoneinfo/America/Yakutat.ics
+++ b/libical/zoneinfo/America/Yakutat.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Yakutat
+TZID:/softwarestudio.org/Olson_20011022_4/America/Yakutat
 X-LIC-LOCATION:America/Yakutat
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
@@ -18,93 +18,93 @@ TZNAME:AKDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0900
+TZOFFSETTO:-0800
+TZNAME:AKDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0900
+TZOFFSETTO:-0800
+TZNAME:YDT
+DTSTART:19830424T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19790429T020000
+RDATE:19780430T020000
+RDATE:19770424T020000
+RDATE:19760425T020000
+RDATE:19750223T020000
+RDATE:19740106T020000
+RDATE:19730429T020000
+RDATE:19720430T020000
+RDATE:19710425T020000
+RDATE:19700426T020000
+RDATE:19690427T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:+1441
-TZOFFSETTO:-0919
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0919
+TZOFFSETFROM:-0800
 TZOFFSETTO:-0900
 TZNAME:YST
-DTSTART:19000820T120000
-RDATE:19000820T120000
+DTSTART:19821031T020000
+RDATE:19821031T020000
+RDATE:19811025T020000
+RDATE:19801026T020000
+RDATE:19791028T020000
+RDATE:19781029T020000
+RDATE:19771030T020000
+RDATE:19761031T020000
+RDATE:19751026T020000
+RDATE:19741027T020000
+RDATE:19731028T020000
+RDATE:19721029T020000
+RDATE:19711031T020000
+RDATE:19701025T020000
+RDATE:19691026T020000
+RDATE:19450930T020000
 END:STANDARD
 BEGIN:STANDARD
 TZOFFSETFROM:-0900
 TZOFFSETTO:-0900
 TZNAME:YST
-DTSTART:19420101T000000
-RDATE:19420101T000000
-RDATE:19460101T000000
+DTSTART:19690101T000000
 RDATE:19690101T000000
+RDATE:19460101T000000
+RDATE:19420101T000000
 END:STANDARD
 BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:YWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0800
 TZNAME:YPT
 DTSTART:19450814T150000
 RDATE:19450814T150000
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19691026T020000
-RDATE:19701025T020000
-RDATE:19711031T020000
-RDATE:19721029T020000
-RDATE:19731028T020000
-RDATE:19741027T020000
-RDATE:19751026T020000
-RDATE:19761031T020000
-RDATE:19771030T020000
-RDATE:19781029T020000
-RDATE:19791028T020000
-RDATE:19801026T020000
-RDATE:19811025T020000
-RDATE:19821031T020000
-END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
 TZOFFSETTO:-0800
-TZNAME:YDT
-DTSTART:19690427T020000
-RDATE:19690427T020000
-RDATE:19700426T020000
-RDATE:19710425T020000
-RDATE:19720430T020000
-RDATE:19730429T020000
-RDATE:19740106T020000
-RDATE:19750223T020000
-RDATE:19760425T020000
-RDATE:19770424T020000
-RDATE:19780430T020000
-RDATE:19790429T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:AKDT
-DTSTART:19840429T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
+TZNAME:YWT
+DTSTART:19420209T020000
+RDATE:19420209T020000
 END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:-0919
+TZOFFSETTO:-0900
+TZNAME:YST
+DTSTART:19000820T120000
+RDATE:19000820T120000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:+1441
+TZOFFSETTO:-0919
+TZNAME:LMT
+DTSTART:18671018T000000
+RDATE:18671018T000000
+END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Yellowknife.ics b/libical/zoneinfo/America/Yellowknife.ics
index d2b37ac2ee..7a09cacdaa 100644
--- a/libical/zoneinfo/America/Yellowknife.ics
+++ b/libical/zoneinfo/America/Yellowknife.ics
@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Yellowknife
+TZID:/softwarestudio.org/Olson_20011022_4/America/Yellowknife
 X-LIC-LOCATION:America/Yellowknife
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
@@ -18,36 +18,43 @@ TZNAME:MDT
 DTSTART:19870405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
+BEGIN:DAYLIGHT
+TZOFFSETFROM:-0700
+TZOFFSETTO:-0600
+TZNAME:MDT
+DTSTART:19860427T020000
+RDATE:19860427T020000
+RDATE:19850428T020000
+RDATE:19840429T020000
+RDATE:19830424T020000
+RDATE:19820425T020000
+RDATE:19810426T020000
+RDATE:19800427T020000
+RDATE:19190525T020000
+RDATE:19180414T020000
+END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0737
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:18840101T000000
-RDATE:18840101T000000
+DTSTART:19651031T020000
+RDATE:19651031T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19190525T020000
-RDATE:19800427T020000
-RDATE:19810426T020000
-RDATE:19820425T020000
-RDATE:19830424T020000
-RDATE:19840429T020000
-RDATE:19850428T020000
-RDATE:19860427T020000
+TZOFFSETTO:-0500
+TZNAME:MDDT
+DTSTART:19650425T000000
+RDATE:19650425T000000
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19181027T020000
-RDATE:19181027T020000
-RDATE:19191101T000000
+DTSTART:19450930T020000
 RDATE:19450930T020000
+RDATE:19191101T000000
+RDATE:19181027T020000
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
@@ -56,19 +63,12 @@ TZNAME:MWT
 DTSTART:19420209T020000
 RDATE:19420209T020000
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0500
-TZNAME:MDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0737
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19651031T020000
-RDATE:19651031T020000
+DTSTART:18840101T000000
+RDATE:18840101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
author	Damon Chaplin <damon@ximian.com>	2001-10-23 07:40:29 +0800
committer	Damon Chaplin <damon@src.gnome.org>	2001-10-23 07:40:29 +0800
commit	1da29bab5d909484d332cf2777da92def62023a6 (patch)
tree	9aa683dc3cf6cbbf712ab76fe46a633d1f581e75 /libical/zoneinfo/America
parent	4807a4d7e75993aefc6860d2747403a7019c49e7 (diff)
download	gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.gz gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.bz2 gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.lz gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.xz gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.tar.zst gsoc2013-evolution-1da29bab5d909484d332cf2777da92def62023a6.zip