- Rebase to tzdata-2018e
- North Korea changed from UTC+8:30 to UTC+9 on May 5, 2018.
- In this update, the upstream project now defaults to using
the "vanguard" data implementation which includes negative DST offsets.
- Rebase to tzdata-2018d:
- DST for Asia/Gaza and Asia/Hebron has changed from March 31 to March 24.
- Antarctica/Casey station changed to UTC+8 on March 11.
- Rebase to tzdata-2018c:
- São Tomé and Príncipe changed from +00 to +01 on January 1, 2018
- Brazil's DST will start on the first Sunday in November
- Support for the new zic -t option.
- Add back pacificnew file omitted in tzdata-2018a
- Rebase to tzdata-2017c
- Northern Cyprus will revert to using EQ rules on October 29, 2017.
- Sudan will switch from +03 to +02 on November 1, 2017.
- Tonga will not change it's clocks on Novemeber 5, 2017 ending it's
experiment with DST.
- Fiji DST will end on January 14, 2018 rather than January 21, 2018.
- Namibia - starting September 3, 2017 switches from +)1 with DST to
+02 all year. This change takes effect April 1, 2018.
- Turks & Caicos changes from -04 all year to -05 with US DST starting
on March 11, 2018. Effective change date is November 4, 2018.
- tzdata now includes two text versions of the time zone data - tzdata.zi
and leapseconds.
- Includes two patches to deal with build issues.
Rebase to tzdata-2017a:
- Mongolia no longer observes DST
- The Magallanes region of Chile will go from -04/-03 to -03 year round,
resulting in a new time zone America/Punta_Arenas.
- Rebase to 2016i
- Pacific/Tongatapu now begins DST on 2016-11-06 at 02:00 and ends
on 2017-01-15 at 03:00.
- Northern Cyprus is changed to +03 year round. This results in a
split in Cyprus time zones starting 2016-10-30 at 04:00 and
creates a new zone - Asia/Famagusta.
- Antarctica/Casey changed from +08 to +11 on 2016-10-22.
- Rebase to 2016g
- Turkey permanently switches from +02 to +03 as of 2016-09-07,
- Per IERS Bulletin C 52, leap second to be added on 2016-09-31 at 23:59:60.
- Rebase to 2016d
- America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
- Asia/Magadan switchefrom +10 to +11 on 2016-04-24 at 02:00.
- New zone Asia/Tomsk, split off from Asia/Novosibirsk. It covers
Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29
at 02:00.
- Rebase to 2016b
- New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and
Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on
2016-03-27 at 02:00 local time. They need distinct zones since their
post-1970 histories disagree. New zone Asia/Barnaul for Altai Krai and
Altai Republic, Russia, which will switch from +06 to +07 on the same date
and local time. The Astrakhan change is already official; the others have
passed the first reading in the State Duma and are extremely likely.
Also, Asia/Sakhalin moves from +10 to +11 on 2016-03-27 at 02:00.
- As a trial of a new system that needs less information to be made up,
the new zones use numeric time zone abbreviations like "+04"
instead of invented abbreviations like "ASTT".
- Haiti will not observe DST in 2016.
- Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00.
Guess future transitions will be March's last Saturday at 01:00, not March's
last Friday at 24:00.
- Rebase to 2016a
- America/Cayman will not observe daylight saving this year after all.
Revert our guess that it would.
- Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00.
- Asia/Tehran now has DST predictions for the year 2038 and later,
to be March 21 00:00 to September 21 00:00. This is likely better
than predicting no DST, albeit off by a day every now and then.
- Rebase to 2015g
- Turkey's 2015 fall-back transition is scheduled for Nov. 8, not Oct. 25.
- Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time.
- Fiji's 2016 fall-back transition is scheduled for January 17, not 24.
- Fort Nelson, British Columbia will not fall back on 2015-11-01. It has
effectively been on MST (-0700) since it advanced its clocks on 2015-03-08.
New zone America/Fort_Nelson.
- Rebase to 2015d
- Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
- The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style. This affects only America/Adak since 1983,
as America/Honolulu was already using the new style.
- Rebase to tzdata-2015c
- Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. 2015's transition will therefore be on
Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes
apply to 2026, 2037, 2043, etc.
- Rebase javazic tool to match latest upstream OpenJDK version
- Mongolia will start observing DST again this year, from the last
Saturday in March at 02:00 to the last Saturday in September at 00:00.
- Palestine will start DST on March 28, not March 27. Also,
correct the fall 2014 transition from September 26 to October 24.
Adjust future predictions accordingly.
- New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49.
- The Mexican state of Quintana Roo, represented by America/Cancun,
will shift from Central Time with DST to Eastern Time without DST
on 2015-02-01 at 02:00.
- Chile will not change clocks in April or thereafter; its new standard time
will be its old daylight saving time. This affects America/Santiago,
Pacific/Easter, and Antarctica/Palmer.
- Rebase to 2014j
- Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00. It's currently scheduled
for 2015-11-01 at 02:00.
- Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
- A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00
Rebase to 2014g
- Turks & Caicos is switching from US eastern time to UTC-4 year-round,
modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
- Morrocco suspends DTS for Ramadan
June 28 at 03:00 and August 2 at 02:00
- Egypt suspends DTS for Ramadan
June 26 and July 31 at 24:00
-Additional edit to support OpenJDK8. (#1091029)
- Lybia switched to using UTC+2 without DST
- Western Sahara (Africa/ElAaiun) uses Morocco's DST rules
- Acres and Amazon swithc to UTC-4 and UTC-5 on 2013-11-10
- Add entries for DST transition in Morocco in the year 2038
changed zones:
share/zoneinfo/Africa/Tripoli
Introduced CET (UTC+1, std) 10th (2nd Sat) Nov 2012 00:00
Introduced CET (UTC+1, std) last Fri Oct 00:00: 2013-2037
Introduced CEST (UTC+2, dst) last Fri Mar 00:00: 2013-2037
Moved EET-2 to CET-1CEST,M3.5.5/1,M10.5.5: after last transition
share/zoneinfo/Libya
Introduced CET (UTC+1, std) 10th (2nd Sat) Nov 2012 00:00
Introduced CET (UTC+1, std) last Fri Oct 00:00: 2013-2037
Introduced CEST (UTC+2, dst) last Fri Mar 00:00: 2013-2037
Moved EET-2 to CET-1CEST,M3.5.5/1,M10.5.5: after last transition
changed zones:
share/zoneinfo/America/Havana
Moved CST (UTC-5, std) from last Sun Oct 05:00 to 1st Sun Nov: 2012-2037
Moved CST5CDT,M3.2.0/0,M10.5.0/1 to CST5CDT,M3.2.0/0,M11.1.0/1: after last transition
share/zoneinfo/Cuba
Moved CST (UTC-5, std) from last Sun Oct 05:00 to 1st Sun Nov: 2012-2037
Moved CST5CDT,M3.2.0/0,M10.5.0/1 to CST5CDT,M3.2.0/0,M11.1.0/1: after last transition
- Changes to zones for Antarctica stations
- Armenia abolished DST in 2012 and forward
- Cuba enters DST on 31st March
- Falkland Islands will stay on permanent Summer Time
- New zone for Creston Valley, Canada, which differs from Dawson
Creek in past stamps. Changes to historical stamps in Canada.
- Last year, Tokelau skipped over the date line together with Samoa
