by Patsy Griffin Franklin (2019-01-02):
- Rebase to tzdata-2018i (includes changes from tzdata-2018h)
- São Tomé and Príncipe changed from UTC+01 to UTC+00 on 2019-01-01.
- Qyzylorda, Kazakhstan changed from UTC+06 to UTC+05 on 2018-12-21.
- Created a new zone Asia/Qostanay since Qostanay, Kazakhstan didn't
transition with the Qyzylorda change.
- Metlakatla, Alaska will observe PST for this winter only.
- Predict that Morocco will continue to adjust clocks around Ramadan.
- Also include predictions for Iran from 2038 through 2090.
by Patsy Griffin Franklin (2018-10-29):
- Rebase to tzdata-2018g
- Morocco will remain at UTC+1 rather than switching back to UTC+0 as
planned. This change is effective Octobober 28, 2018.
by Patsy Griffin Franklin (2018-10-18):
- Europe/Volgograd will change from UTC+3 to UTC+4 on October 28,2018.
- Add patch to remove use of 25:00.
- Drop previous change to DST in Brazil. The government rescinded the
by Patsy Franklin (2018-05-06):
- Update the tzdata.tar.gz file and make the tzdata.zi file during prep.
by Patsy Franklin (2018-03-22):
- 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.
by Patsy Franklin (2018-01-23):
- Rebase to tzdata-2018c
- Revert the Irish time changes that relied on negative DST offsets.
by Patsy Franklin (2017-10-23):
- 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
by Patsy Franklin (2017-03-20):
- Rebase to tzdata-2017b.
- Haiti resumed DST on March 12, 2017.
by Patsy Franklin (2017-03-02):
- Rebase to tzdata-2017a
- Mongolia no longer observes DST (BZ #1425223)
- Add upstream patch to fix over-runing of POSIX limit on zone abbreviations.
- Add zone1970.tab to the install files. (BZ #1427696)
by Patsy Franklin (2016-11-23):
- Rebase to tzdata-2016ij
- Saratov region of Russia is moving from +03 offset to +04 offset
by Patsy Franklin (2016-11-02):
- Rebase to tzdata-2016i:
- Cyprus is now split into two time zones as of 2016-10-30
- Tonga will reintroduce DST on 2016-11-06
by Patsy Franklin (2016-10-20):
- Rebase to tzdata-2016h:
- Palestine will end DST on 2016-10-29 not 2016-10-21.
by Patsy Franklin (2016-09-28):
- Rebase to tzdata-2016g.
- Turkey changed from EET/EEST (+02/+03) to permanent +03,
- A new leap second will be added on 2016-12-31 23:59:60 UTC.
by Patsy Franklin (2016-07-05):
- Rebase to 2016f
- Egypt cancelled DST.
- Asia/Novosibirsk transitions from +06 to +07 on 2016-07-24 at 02:00.
by Patsy Franklin (2016-06-14):
- Rebase to 2016e
- Egypt reinstates DST.
by Patsy Franklin (2016-04-18):
- Rebase to 2016d
- America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
- Asia/Magadan switches from +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
by Patsy Franklin (2016-03-23):
- Rebase to 2016c
- Azerbaijan no longer observes DST.
- Chile reverts from permanent to seasonal DST.
by Patsy Franklin (2016-03-14):
- 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.
by Patsy Franklin (2016-01-28):
- 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.
by Patsy Franklin (2015-10-01):
- 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.
by Patsy Franklin (2015-08-10):
- Rebase to 2015f
- North Korea switches to +0830 on 2015-08-15.
The abbreviation remains "KST".
- Uruguay no longer observes DST.
by Patsy Franklin (2015-06-14):
- Rebase to 2015e:
- Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed. (Thanks to Milamber.)
- Assume Cayman Islands will observe DST starting next year, using US rules.
Although it isn't guaranteed, it is the most likely.
by Patsy Franklin (2015-04-25):
- Rebase to 2015d:
- The Egyptian Cabinet announced that DST will be cancelled for 2015.
- 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.
by Patsy Franklin (2015-04-14):
- Rebase to 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.
by Patsy Franklin (2015-03-21):
- Rebase to 2015b
- 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.
by Patsy Franklin (2015-01-30):
- Rebase to 2015a
- 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.
by Patsy Franklin (2014-11-11):
- 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.
by Patsy Franklin (2014-10-22):
- Rebase to 2014i
- 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.
by Petr Machata (2014-09-26):
- Bump for rebuild.
by Patsy Franklin (2014-09-02):
- 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.
by Patsy Franklin (2014-08-10):
- Rebase to 2014f
- Several Russian time zone changes effective on 2014-10-26
at 02:00 local time. See NEWS file for additional details.
by Patsy Franklin (2014-06-14):
- Rebase to 2014e
- 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
by Patsy Franklin (2014-05-29):
- Rebase to 2014d
- zic no longer generates files containing time stamps before
the Big Bang. This works around GNOME bug 730332
by Petr Machata (2014-05-13):
- The transition time will be 24:00, not 0:00.
by Patsy Franklin (2015-03-25):
- Rebase to 2014b
- Crimea switches to Moscow time on 2014-03-30 at 02:00 local time.
- New entry for Troll station, Antarctica.
by Patsy Franklin (2014-03-10):
- Turkey begins DST on 2014-03-31, not 03-30.
by Patsy Franklin (2014-01-20):
- Fiji ends DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00.
by Patsy Franklin (2013-12-17):
- Rebase with early release of 2013i from Paul Eggert github.
- Jordan switches back to standard time at 00:00 on December 20,2013.
- The 2006-2011 transition schedule is planned to resume in 2014.
- The compile-time flag NOSOLAR has been removed.
- The files solar87, solar88, and solar89 are no longer distributed.
- tz-link.htm now mentions Noda Time.
by Patsy Franklin (2013-10-02):
- Morocco moved end of DST from September to October (#1013527).
by Petr Machata (2013-07-04):
- Update descriptions in iso3166.tab; make Jerusalem coordinates in
zone.tab more precise
- Update local mean time for Jerusalem to match more-precise longitude
- Move Morocco's midsummer 2013 transitions
Fixes 980805 980807 981019 981020
- Israel now falls back on the last Sunday of October
by Petr Machata (2013-05-17):
- Upstream 2013c
- Sync past stamps for Palestine and West Bank with timeanddate.com
- Assume that the recent change to Paraguay's DST rules is permanent
- Macquarie was uninhabited between 1919 and 1948. It's also part
of Australia (update in zone.tab).
by Petr Machata (2013-03-13):
- Upstream 2013b
- Paraguay will end DST on March 24 this year
- Haiti uses US daylight-saving rules this year
- Morocco does not observe DST during Ramadan
- Upstream 2013a
- Retire Chile patch, 2013a has the data
- New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen
- Many changes in historical timestamps
by Petr Machata (2013-02-27):
- DTS in Chile will end on 2013-04-28
by Petr Machata (2012-11-30):
- Upstream 2012j
- Libya moved to CET
by Petr Machata (2012-11-06):
- Preserve hardlinks that zic leaves behind, install with cp -d
by Petr Machata (2012-09-17):
- Upstream 2012f
- Fiji will start daylight savings at 2 am on Sunday 21st October 2012
and end at 3 am on Sunday 20th January 2013. Guess it will be like
that in following years as well.
- Upstream 2012e
- Tokelau is in time zone UTC+13, not UTC+14 (and always was)
- Upstream 2012d
- Morocco will not observe DST during the month of Ramadan.
DST cessation end date was corrected.
- Drop tzdata-2012c-morocco.patch
by Petr Machata (2012-07-13):
- Morocco will not observe DST during the month of Ramadan
by Petr Machata (2012-05-15):
- Upstream 2012c
- Haiti observes DST from 2012 on
- Gaza Strip and Hebron observe DST in 2012
- Change start of DST in Syria to last Friday in March
- Resolves: #820689
by Petr Machata (2012-03-16):
- Morocco moved DST entry to last Sunday of April
- Resolves: #802541
by Petr Machata (2012-02-24):
- The Chilean Government has decided to postpone the entrance into
winter time (to leave DST) from March 11 2012 to April 28th 2012
- Resolves: #796747
by Petr Machata (2011-10-19):
- Ukraine will enter Winter Time after all
- Resolves: #739916
by Petr Machata (2011-08-10):
- Patch for upcoming change in Newfoundland. The transition time
changes from 12:01 AM to 2:00 AM.
- Resolves: #729697
by Petr Machata (2011-06-27):
- Upstream 2011h:
- Russia abandons DST in 2011.
- *.tab: change AN (Netherlands Antilles) to CW (Curacao)
- Resolves: #701268
by Petr Machata (2011-04-26):
- Upstream 2011e:
- Morocco introduced DST for 2011 from April 2 to July 31.
- Delay end of DST in Chile in 2011 until May 7.
- Resolves: #698608
- Upstream 2011f:
- The Falkland Islands will not turn back clocks this winter, but
stay on daylight saving time.
- Upstream 2011g:
- Egypt abandons DST in 2011 (and forward)
- Resolves: #698397
- Dropped tzdata-2011d-chile.patch
- Dropped tzdata-2011d-morocco.patch
by Petr Machata (2011-03-30):
- Morocco introduced DST for 2011 from April 2 to July 31. (tzdata-2011d-morocco.patch)
- Resolves: #692160
by Petr Machata (2011-03-15):
- Upstream 2011d:
- Change end of DST in Samoa in 2011.
- Change start of DST in Cuba in 2011.
- Move start of DST in Turkey by one day in 2011.
- Dropped tzdata-2011b-c.patch
- Resolves: #684212
by Petr Machata (2011-03-04):
- Upstream 2011a:
- Updates of historical stamps for Hawaii
- Upstream 2011b:
- America/North_Dakota/Beulah: Mercer County, North Dakota, changed
from the mountain time zone to the central time zone
- Kemerovo oblast should use OMST/OMSST abbreviation (tzdata-2011b-kemerovo.patch)
- Update of historical stamps for Juneau, Sitka, and histcurrent
stamps for Metlakatla. Sitka and Metlakatla are new zones.
- Delay end of DST in Chile in 2011 until first Sunday in April.
- Resolves: #681594
by Petr Machata (2010-12-13):
- Upstream 2010m:
- Hong Kong didn't observe DST in 1977
- In zone.tab, remove obsolete association of Vostok Station with
South Magnetic Pole; add association with Lake Vostok
- Upstream 2010n:
- Change end of DST in Samoa in 2011 from 2011-04-03 0:00 to
- Upstream 2010o:
- Fiji will end DST on March 6, 2011, not March 27, 2011
- Resolves: #662777
by Petr Machata (2010-08-30):
- Upstream 2010l:
- Change Cairo's 2010 reversion to DST from the midnight between
September 8 and 9 to the midnight between September 9 and 10.
- Change Gaza's 2010 return to standard time to the midnight between
August 10 and 11.
- Bahia de Banderas (Mexican state of Nayarit) changed time zone
UTC-7 to new time zone UTC-6 on April 4, 2010
- Resolves: #628637
by Andreas Schwab (2010-07-28):
- Upadate to 2010k (#618593)
- No DST in Egypt during Ramadan in 2010
- Bahía de Banderas moved to UTC-6 on April 4, 2010, new time zone
- Rename Pacific/Truk to Pacific/Chuuk and Pacific/Ponape to Pacific/Pohnpei
- Update historical data of Europe/Helsinki
- Update tz-links page
by Petr Machata (2010-04-22):
- Upstream 2010g:
- No Bangladesh DST in 2010 and forward.
- Gaza DST starts last Saturday in March at 12:01 a.m. in 2010 and forward
- Kamchatka and Anadyr change to Moscow+8 on 2010-03-28
- Samara changes to Moscow+0 on 2010-03-28
- Related zone.tab updates
- Upstream 2010h:
- No DST in Tunisia in 2010 and forward
- No DST in Pakistan in 2010 and forward
- Upstream 2010i:
- Morocco will have DST from 2010-05-02 to 2010-08-08
- San Luis, Argentina will keep permanent DST after April 11, 2010
- Updates of historical stamps for Taiwan
- Dropped tzdata-2010g-tunis.patch
- Dropped tzdata-2010f-g.patch
- Dropped tzdata-2010g-karachi.patch
- Resolves: #584847
by Petr Machata (2010-03-31):
- Remove leftover dependency on tzdata-c
- Related: #576611
by Petr Machata (2010-03-09):
- Upstream 2010d
- The DST change in Bangladesh takes place a minute earlier
- Fiji to end DST on 2010-03-28 at 03:00, about a month earlier
- Samoa to observe DST this year; they didn't observe DST last year
- DST in Chile extended to 3 April
- Resolves: #571538
- Upstream 2010e:
- Fix a typo in Bangladesh DST rule
by Petr Machata (2010-03-02):
- Upstream 2010a
- Source code cleanups
- Upstream 2010b
- Northern Mexico's border cities share the DST schedule with the
- Upstream 2010c
- Paraguay DST now in effect from 2nd Sunday of April to 1st Sunday
- Resolves: #568667
by Petr Machata (2010-01-04):
- Upstream 2009p
- Argentina does not enter DST on October 18
- San Luis switched from UTC-4 to UTC-3 on October 11th
- Upstream 2009q
- Change DST end in Syria from November 1 to last Friday in October
- Changes to past Hong Kong transitions
- Kemerovo oblast' in Russia will change current time zone on March 28, 2010.
Asia/Novokuznetsk is the new time zone name
- Upstream 2009r
- Changes to local times of three Australian research stations in Antarctica
- Upstream 2009s
- Fiji plans to re-introduce DST from November 29th 2009 to April 25th 2010
- Upstream 2009u
- Bangladesh changed their clock back to Standard Time on December 31, 2009
- Resolves: #550570
- Dropped tzdata-2009o-argentinas.patch
by Petr Machata (2009-10-21):
- San Luis (Argentina) entered DST on October 11 (tzdata-2009o-argentinas.patch)
- Resolves: #529427
by Petr Machata (2009-09-18):
- Upstream 2009m
- Palestine will will revert back to winter time on Friday, 2009-09-04
- Samoa passed the DST Bill that fixes DST dates for 2009 and 2010
- Drop Egypt patch
- Add markers for autoupdate of spec file
- Pakistan leaves the period of DST on October 1
- Resolves: #524198
by Petr Machata (2009-08-13):
- Upstream 2009j
- DST switch for Bangladesh will occur an hour earlier than was
thought (we can drop Bangladesh patch).
- Upstream 2009k
- Mauritius will not continue to observe DST the coming summer
- Arbitrarily end DST at the end of 2009 so that a POSIX-style time
zone string can appear in the Dhaka binary file
- Egypt starts winter time on August 21.
- Resolves: #517009
by Petr Machata (2009-06-15):
- Official announcement is for the Bangladesh change to occur at 23:00
of local time, not 24:00. Add upstream patch implementing the same.
- Resolves: #503832
by Petr Machata (2009-04-14):
- Upstream 2009a
- Fix Asia/Kathmandu spelling
- Historical timestamps for Switzerland and Cuba
- DST update for America/Resolute
- Upstream 2009d
- Morocco will observe DST from 2009-06-01 00:00 to 2009-08-21 00:00
- Tunisia will not observe DST this year.
- Syria will start DST on 2009-03-27 00:00 this year
- Cuba will start DST on midnight between 2009-03-07 and 2009-03-08
- Province of San Luis, Argentina, went to UTC-04:00 on 2009-03-15
- Upstream 2009e
- Historical changes for Jordan
- Palestine will start DST on 2009-03-26 and end 2009-09-27
- Upstream 2009f
- Pakistan will observe DST between 2009-04-15 and (probably) 2009-11-01
- Resolves: #495470
- Egypt ends DST on 2009-09-24
- Resolves: #492263
by Petr Machata (2008-10-30):
- Upstream 2008g
- Fixed future DST transitions for Brazil
- Upstream 2008h
- Fix exact DST transition hour for Mauritius
- Syria will leave the period of DST on Nov 1
- Fix coordinates of Pacific/Niue
- Upstream 2008i
- Updates for Argentina: Drop DST in zones America/Argentina/Jujuy,
La_Rioja, San_Juan, Catamarca, Mendoza, Rio_Gallegos, Ushuaia; new
zone America/Argentina/Salta (for provinces SA, LP, NQ, RN).
- Resolves: #467188
by Petr Machata (2008-10-04):
- Resolves: #462707
by Petr Machata (2008-08-28):
- Upstream 2008c
- Mongolia changes zone
- Pakistan DST is scheduled until Sep/1, instead of Aug/31
- Upstream 2008d
- Changes for Brazil and Mauritius
- Upstream 2008e
- Changes for Mauritius
- Leap second coverage for 31/Dec 2008
- Corrections of historical dates
- Drop Morocco and Pakistan patches that are superseded by upstream
- Pakistan DST is scheduled until Oct/31
- Morocco DST is scheduled until Aug/31
- Resolves: #460059 #460365 #452679
by Petr Machata (2007-07-03):
- Upstream 2007f
- New Zealand is extending DST, starting later this year.
- Haiti no longer observes DST.
- The Turks and Caicos switch at 02:00, not at 00:00, and have
adopted US DST rules.
- Upstream 2007e
- Syria switched to summer time at Mar/29.
- Honduras will not enter DST this year.
- Resolves: #240786