Timezone Data Versions in the JRE Software

By the Java SE Platform Support Team, Jan 2016

This table shows which version of the Timezone data is included in the different releases of the Java Development Kit (JDK) software and the TZUpdater tool. Further information about the contents of the timezone data releases is contained in the related request for enhancement (RFE) for that release. Where a major timezone change has been included in a timezone data release, this is described in the last column.

Latest TZdata release can be found from IANA TZdata page.

Since the release of TZUpdater v2.0, users can now update the tzdata version in their JDK/JRE using data obtained directly from the IANA tzdata releases. Refer to the TZUpdater README for more details.

If you want to be informed about timezone data updates in the Java SE platform and the TZUpdater tool as soon as they happen, subscribe to the timezone data version RSS feed.

Timezone Tzdata Version

Introduced in JRE Update Release
TZUpdater Version
Main Changes in this Timezone Data Release
America/Cayman will not observe daylight saving this year after all.
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.
America/Metlakatla switched from PST all year to AKST/AKDT on 2015-11-01 at 02:00.
America/Santa_Isabel has been removed, and replaced with a backward compatibility link to America/Tijuana.
Asia/Karachi's two transition times in 2002 were off by a minute.
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.
North Korea switches to +0830 on 2015-08-15.The abbreviation remains "KST".
Uruguay no longer observes DST.
Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00, not 06-13 and 07-18 as guessed.
Egypt will not observe DST in 2015 and will consider canceling it permanently. For now, assume no DST indefinitely.
America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not 1966-07-01. Also, Yukon's time zone history is documented better.
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.
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.
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.
The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a regression.
Some more zones have been turned into links, when they differed from existing zones only for older time stamps. As usual, these changes affect UTC offsets in pre-1970 time stamps only. Their old contents have been moved to the 'backzone' file. The affected zones are: America/Antigua, America/Cayman, Pacific/Midway, and Pacific/Saipan.
Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD".
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.
New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49.
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.
Since Belarus is not changing its clocks even though Moscow is, the time zone abbreviation in Europe/Minsk is changing from FET to its more-traditional value MSK on 2014-10-26 at 01:00.
The new abbreviation IDT stands for the pre-1976 use of UT+8 in Indochina, to distinguish it better from ICT (UT+7).
America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, not 1920-01-06.
Some more zones have been turned into links, when they differed from existing zones only for older time stamps. As usual, these changes affect UTC offsets in pre-1970 time stamps only. Their old contents have been moved to the 'backzone' file. The affected zones are: Africa/Blantyre, Africa/Bujumbura, Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
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.
Time in Russia or the USSR before 1926 or so has been corrected by a few seconds in the following zones: Asia/Irkutsk, Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For Asia/Yekaterinburg the correction is a few minutes.
The Portuguese decree of 1911-05-26 took effect on 1912-01-01. This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32.
Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
Russia will subtract an hour from most of its time zones on 2014-10-26 at 02:00 local time. There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic (Europe/Samara) are not changing their clocks. The changed zones are Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, but not its UTC offset. Two zones are added: Asia/Chita (split from Asia/Yakutsk, and also with two hours subtracted) and Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour subtracted).
Australian eastern time zone abbreviations are now AEST/AEDT not EST, and similarly for the other Australian zones. That is, for eastern standard and daylight saving time the abbreviations are AEST and AEDT instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, and AWST/AWDT are now used instead of the former CST, CWST, and WST. This change does not affect UTC offsets, only time zone abbreviations.
Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7) effective 2014-10-26 at 02:00 local time.
The time zone abbreviation for Xinjiang Time (observed in Ürümqi) has been changed from URUT to XJT.
Prefer MSK/MSD for Moscow time in Russia, even in other cities. Similarly, prefer EET/EEST for eastern European time in Russia.
Change time zone abbreviations in (western) Samoa to use "ST" and "DT" suffixes, as this is more likely to match common practice. Prefix "W" to (western) Samoa time when its standard-time offset disagrees with that of American Samoa.
America/Metlakatla now uses PST, not MeST, to abbreviate its time zone.
Time zone abbreviations have been updated for Japan's two time zones used 1896-1937. JWST now stands for Western Standard Time, and JCST for Central Standard Time (formerly this was CJT). These abbreviations are now used for time in Korea, Taiwan, and Sakhalin while controlled by Japan.
Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. Guess that from 2015 on Egypt will temporarily switch to standard time at 24:00 the last Thursday before Ramadan, and back to DST at 00:00 the first Friday after Ramadan.
Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. Guess that from 2015 on Morocco will temporarily switch to standard time at 03:00 the last Saturday before Ramadan, and back to DST at 02:00 the first Saturday after Ramadan.
The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of "MSD" for Moscow's double daylight time in summer 1921. Also, a typo "VLASST" has been repaired to be "VLAST" for Vladivostok summer time in 1991.
zic no longer generates files containing time stamps well before the Big Bang.
This works around GNOME bug 730332
Egypt observes DST starting 2014-05-15 at 24:00.
Details have not been announced, except that DST will not be observed during Ramadan. Guess that DST will stop during the same Ramadan dates as Morocco, and that Egypt's future spring and fall transitions will be the same as 2010 when it last observed DST, namely April's last Friday at 00:00 to September's last Thursday at 23:00 standard time.
Also, guess that Ramadan transitions will be at 00:00 standard time.
Crimea switches to Moscow time on 2014-03-30 at 02:00 local time.
Turkey begins DST on 2014-03-31
Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00.
Ukraine switched from Moscow to Eastern European time on 1990-07-01 (not 1992-01-01), and observed DST during the entire next winter.
In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03.
Jordan switches back to standard time at 00:00 on December 20, 2013. The 2006-2011 transition schedule is planned to resume in 2014.
In 2004, Cuba began DST on March 28, not April 4.
Libya has switched its time zone back to UTC+2 without DST, instead of UTC+1 with DST.
Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules.
Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe.
Add entries for DST transitions in Morocco in the year 2038.
Morocco now observes DST from the last Sunday in March to the last Sunday in October, not April to September respectively.
Tocantins will very likely not observe DST starting this spring.
Jordan will likely stay at UTC+3 indefinitely, and will not fall back this fall.
Palestine will fall back at 00:00, not 01:00.
Fiji will start DST on October 27, not October 20 in 2013.
Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian time zone abbreviations since 1932.
Pacific/Johnston is now a link to Pacific/Honolulu.
Change Kingston Mean Time from -5:07:12 to -5:07:11.
Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46.
Change the date of the circa-1850 Zurich transition from 1849-09-12 to 1853-07-16.
For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932.
Morocco's midsummer transitions this year are July 7 and August 10,not July 9 and August 8.
Israel now falls back on the last Sunday of October.
Palestine observed DST starting March 29, 2013.
Changes in Paraguay's DST rules.
Haiti uses US daylight-saving rules this year, and presumably future years.
Paraguay will end DST on March 24 this year.
Morocco does not observe DST during Ramadan;try to predict Ramadan in Morocco as best we can.
Chile's 2013 rules, and we guess rules for 2014 and later, will be the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC.
New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen.
Libya moved to CET on Nov 10th weekend, but with DST planned next year.
DST changes in Cuba to first Sun of Nov.
Bahia no longer has DST.
Tocantins has DST.
Israel has new DST rules next year.
Jordan stays on DST this winter.
Changes in DST time for Samoa and Palestine in fall 2012.
Changes in DST time for Fiji which will is October 21 through January 20 this year.
Changes in DST time for Tokelau which is now UTC+13, not UTC+14.
Changes in DST time for Morocco. For 2012 only, Morocco will leave DST on July 20th and re-enter it on Aug 20th.
Changes in summer time for Morocco (to start late April 2012)
Changes for 2012 for Gaza & the West Bank (Hebron) and Syria.
Haiti following US/Canada rules for 2012.
The start date for summer time in Cuba this year.
The excess tab from the zone.tab file is also gone.
Armenia has abolished summer time.
Tokelau copied Samoa and swapped sides of the International Data line last December.
Leap Second will occur 2012-06-30 at 23:59:60 UTC.
New zone America/Creston created for an area in British Columbia
Chile has extended Summer time in the 2011/2 summer.
The Falkland Islands now have it permanently (continuing the 2011 experiment.) This "permanently" is a guess, it apparently is certain for 2012 (as certain as these things ever are) and considered likely into the future.
Changes in DST rule for Cuba, Tiraspol (Pridnestrovian Moldavian Republic) and Fiji.
Changes in DST rule for Ukraine, Tiraspol (Moldovia) and Bahia (Brazil).
Changes in DST rule for West Bank.
Changes in DST rule for Fiji.
Palestine suspends DST during Ramadan in 2011.
Gaza and Hebron split in 2011, leading to a new Asia/Hebron zone.
Belarus adopts permanent DST in 2011.
Given the Belarus change, "Russia" rules changed to reflect end of use in 2010.
Updated comment on Newfoundland's 2011 change of time of day when DST starts and ends.
Samoa uses DST in 2011-2012.
Four instances of 2:44:45 changed to 2:45 in Africa zone.
Add Africa/Juba (South Sudan) zone.
Samoa skips over 2011-12-30.
Use KALT as abbreviation for Europe/Kalinigrad from spring 2011 forward.
Newfoundland changes time of day for DST start and end to 2:00 a.m. starting fall 2011 and forward.
Change America/Resolute use of EST to 2006-2007 only.
Assume Metlakatla abandoned use of daylight saving as a result of its 1983 vote.
Avoid unnecessary use of US rule in America/Honolulu.
Remove unused "RussAQ" rules.
Russia abandons DST in 2011
Change AN (Netherlands Antilles) to CW (Curacao)
Change of DST rules for Egypt to abandon DST this year.
Change of temporary DST rules for Falkland Islands.
Add start and end of DST in 2011 in Morocco.
Change end and start of DST in 2011 in Chile.
Change end of DST in Samoa in 2011.
Change start of DST in Cuba in 2011.
Turkish one-day delay in the start of DST.
Delay end of DST in 2011 until first Sunday in April.
Affect current time stamps in Chile and Annette Island, Alaska.
Added America/North_Dakota/Beulah (Mercer County, North Dakota, moved from Mountain to Central time at end of DST in 2010)
australasia - Simplification and gratuitous optimization of South Australia rules.
northamerica - Changes to Hawaiian time history (from an article by Schmitt and Cox): abandoned local mean time in 1986 rather than 1900; used DST during World War II.
Fiji moving end of DST from March 27 to March 6 in 2011.
Change end of DST in Samoa in 2011 from 2011-04-03 0:00 to 2011-04-03 1:00
No DST in Hong Kong in 1977
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.
Changes to DST rule for Egypt in 2010.
New "Bahia_Banderas" time zone added
Changes to DST rule for Morocco in 2010.
Changes to Taipei DST in 1979; remove Taipei DST in 1980.
Changes to San Luis on "permanent" DST as of 2010.
Correction in DST rules for DhakaChanges to Tunisia DST. No DST 2010 and forward
Changes to Pakistan DST. No DST 2010 and forward
Changes in Bangladesh DST. No DST in 2010 and forward.
Gaza DST starts last Saturday in March at 12:01 a.m. in 2010 and forward.
Kamchaatka changes to Moscow+8 on 2010-03-28.
Anadyr changes to Moscow+8 on 2010-03-28.
Samara changes to Moscow on 2010-03-28.
Changes to Australian stations
Change Syria DST start from last Friday in March to first Friday in April in 2010 and forward
Correct 2010 Samoa DST start date
Correction in DST rules for Dhaka
Change time of day when Bangladesh DST starts and ends.
Change end of DST in Fiji in 2010.
Remove DST in Samoa in 2009/2010.
Add DST in Fiji in 2010/2011.
Change end date of Chile DST for 2010 only.
Restate Paraguay DST rule for consistency.
Changes to Paraguay DST rules from 2010 forward
DST rule change for Mexico
DST rule change for Bangladesh
No changes significant to JRE timezone handling are present in the Olson tzdata 2009t release.
Fiji's use of DST in 2009-2010
"antarctica" file has updates to thee local times of Australian research stations and there are two additions to the "tz-link.htm" file.
Change end of DST in Syria in 2009 and forward from November 1 to last Friday in October.
Changes to past Hong Kong transitions.
Add Asia/Novokuznetsk
Most of Argentina is not using DST in 2009-2010
Bangladesh does not go off DST in 2009
Pakistan goes off DST November 1 2009 (and in future years)
End of DST in Pakistan in 2009
DST rule changes for Samoa and Palestine
End of DST in Egypt in 2009
Asia - Arbitrarily cut off Dhaka DST at end of 2009

Africa - Change Mauritius to reflect that 2008-2009 DST experiment is not repeated (and to change end of DST in 2009 from 2:00 standard time to 2:00 local time)

Europe - Update URL for Directive 2000/84/EC on summer-time arrangements
Bangladesh DST start moved 1 hour earlier from midnight 20th June to 23:00 19th June.
Changes in DST for Bangladesh this year (2009). Jordan changes in 2009h release have not yet been implemented. Will be present in later release. No effect until 2011.
The start of DST in Jordan from 2002 forward is changed from 0:00 on the last Friday of the month to 24:00 on the last Thursday. * No TZUpdater tool with be released with this change.
Changes to Cairo/Egypt DST rule. For ending DST: Egypt is expected to revert to the last Thursday in September.
New 2009 DST rules for Pakistan. Pakistan plan to introduce DST from April 15th 2009 to October 31st 2009
Changes to Jordan and Palestine rules. According to the Palestine News Network, Palestinian government decided to start Daylight Time on Thursday night March 26 and continue until the night of 27 September 2009.
Changes to Morocco, Tunisia, Argentina and Syria rules.The Province of San Luis, Argentina, decided that next Sunday instead of staying at UTC-03:00 they will go to UTC-04:00 until the second Saturday in October. Morocco to observe DST from 2009-06-01 00:00 to 2009-08-21 00:00. Tunisia not to observe DST for 2009. Syria to start DST on last Friday in March.
Cuba will start Daylight Saving Time on midnight between Saturday, March 07, 2009 and Sunday, March 08, 2009- not on midnight March 14 / March 15 as previously thought.
In the comments stating that there will be no leap second in June this year.

Change Resolute from Eastern Time to Eastern Standard Time

Change Katmandu to Kathmandu

Modification to Argentinian timezones including the creation of Argentina/Salta
Change Maurituis transition hours to 2:00 *standard* time Change Syrian end of DST from October 1 to November 1
New DST data for Brazil adopting DST from the 3rd Oct (Sunday) to the 3rd Feb (Sunday).

Mauritus  —  DST 2008 ff. from last Sunday in Oct .to last Sunday in Mar.

Morocco —  End of DST 2008 ff. changed from Sept. 28 to Sept. 1

Gaza —  End of DST 2008 ff. changed from second Thursday in Sept. to last Thursday in Aug.

Pakistan —  End of DST 2008 only changed from Sept. 1 to Nov. 1

Turkey —  Add comments about proposed changes in 2011

Argentina —  Start of DST 2008 ff. changed from first to third Sunday

Brazil —  Start of DST 2008 ff. changed from second to third Sunday

Mauritius's 2008 DST experiment, and some localized Brazilian time zone realignments.
New data for Morocco, Pakistan and Choibalsan (Mongolia). Morocco and Pakistan observe DST in 2008, and the UCT offset for Choibalsan is now 8 hours.
New data for Chile, Cuba, Argentina and Iraq: Chile DST extended until March 31st 2008 due to drought conditions; Cuba DST starts later; San Luis in Argentina changes zone; Iraq abandons DST.
New data for Argentina: at 2am local time on December 29, 2007, the DST offset moved from GMT-4 to GMT-5.
New data for Venezuela
New data for Cuba and Syria
New data for Brazil, Egypt, Gaza, Iran and Venezuela
New data for Australia (2008) and for America/Indiana
New data for New Zealand
New data for Syria and Honduras
New data for Asmara and Easter Island
New data for Western Australia
New data for Honduras, Bermuda, Moncton, Blanc-Sablon, Gaza, and Cuba
New data for Egypt, Syria, and Uruguay
New data for Haiti, Sri Lanka, and Canada
New data for America/Indiana and America/New Brunswick. See RFE for details
New data for Uruguay and Kyrgyzstan
Includes the USDST 2007 data

Note: Timezone data is cumulative. For example, if you have installed tzdata2007g, then you do not need to install any previous release to get all the data for New Zealand.

For More Information

Please see Readme of TZUpdater tool.

For further information about how timezone changes affect the JRE software, see Timezones, Daylight Savings Time, and the Oracle TZUpdater for the Java Runtime Environment (JRE) and Timezones and the Java Runtime Environment: Frequently Asked Questions.