Timezone Data Versions in the JRE Software

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This table shows which version of the Olson 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 Olson releases is contained in the related request for enhancement (RFE) for that release. Where a major timezone change has been included in an Olson release, this is described in the last column.

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 by clicking on the RSS icon:

Olson Tzdata Version	Introduced in JRE Update Release				TZupdater Version	Main Changes in This Olson Release
tzdata2010j						New "Bahia_Banderas" time zone added
tzdata2010i		1.4.2_27	5.0u25	6u21	1.3.31	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.
tzdata2010h					1.3.30	Correction in DST rules for DhakaChanges to Tunisia DST. No DST 2010 and forward Changes to Pakistan DST. No DST 2010 and forward
tzdata2010g						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.
tzdata2010f					1.3.29	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
tzdata2010e					1.3.28	Correction in DST rules for Dhaka
tzdata2010d					1.3.28	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.
tzdata2010c					1.3.27	Changes to Paraguay DST rules from 2010 forward
tzdata2010b	1.3.1_28	1.4.2_26	5.0u24	6u20	1.3.26	DST rule change for Mexico
tzdata2009u					1.3.25	DST rule change for Bangladesh
tzdata2009t						No changes significant to JRE timezone handling are present in the Olson tzdata 2009t release.
tzdata2009s		1.4.2_25	5.0u23	6u18	1.3.24	Fiji's use of DST in 2009-2010
tzdata2009r					1.3.23	"antarctica" file has updates to thee local times of Australian research stations and there are two additions to the "tz-link.htm" file.
tzdata2009q					1.3.22	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
tzdata2009p					1.3.21	Most of Argentina is not using DST in 2009-2010
tzdata2009o						Bangladesh does not go off DST in 2009 Pakistan goes off DST November 1 2009 (and in future years)
tzdata2009n						End of DST in Pakistan in 2009
tzdata2009m	1.3.1_27	1.4.2_24	5.0u22	6u17	1.3.20	DST rule changes for Samoa and Palestine
tzdata2009l		1.4.2_23	5.0u21		1.3.19	End of DST in Egypt in 2009
tzdata2009k					1.3.18	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
tzdata2009j					1.3.17	Bangladesh DST start moved 1 hour earlier from midnight 20th June to 23:00 19th June.
tzdata2009i	1.3.1_26	1.4.2_22	5.0u20	6u15	1.3.16	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.
tzdata2009h						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.
tzdata2009g		1.4.2_21	5.0u19	6u14	1.3.15	Changes to Cairo/Egypt DST rule. For ending DST: Egypt is expected to revert to the last Thursday in September.
tzdata2009f					1.3.14	New 2009 DST rules for Pakistan. Pakistan plan to introduce DST from April 15th 2009 to October 31st 2009
tzdata2009e					1.3.13	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.
tzdata2009d						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.
tzdata2009c						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.
tzdata2009b						In the comments stating that there will be no leap second in June this year.
tzdata2009a	1.3.1_25	1.4.2_20	5.0u18	6u13	1.3.12	Change Resolute from Eastern Time to Eastern Standard Time Change Katmandu to Kathmandu
tzdata2008i		1.4.2_19	5.0u17	6u11	1.3.11	Modification to Argentinian timezones including the creation of Argentina/Salta
tzdata2008h	1.3.1_24				1.3.10	Change Maurituis transition hours to 2:00 *standard* time Change Syrian end of DST from October 1 to November 1
tzdata2008g					1.3.9	New DST data for Brazil adopting DST from the 3rd Oct (Sunday) to the 3rd Feb (Sunday).
tzdata2008f					1.3.8	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
tzdata2008e					1.3.7	Mauritius's 2008 DST experiment, and some localized Brazilian time zone realignments.
tzdata2008c				6u10	1.3.6	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.
tzdata2008b	1.3.1_23	1.4.2_18	5.0u16	6u7	1.3.5	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.
tzdata2007k	1.3.1_22	1.4.2_17	5.0u15	6u5	1.3.3	New data for Argentina: at 2am local time on December 29, 2007, the DST offset moved from GMT-4 to GMT-5.
tzdata2007j					1.3.2	New data for Venezuela
tzdata2007i					1.3.1	New data for Cuba and Syria
tzdata2007h	1.3.1_21		5.0u14	6u4	1.3.0	New data for Brazil, Egypt, Gaza, Iran and Venezuela
tzdata2007g			5.0u13	6u3	1.2.2	New data for Australia (2008) and for America/Indiana
tzdata2007f		1.4.2_15		6u2	1.2.1	New data for New Zealand
tzdata2007e			5.0u12		1.2.0	New data for Syria and Honduras
tzdata2007a	1.3.1_20	1.4.2_14		6u1	1.0.1	New data for Asmara and Easter Island
tzdata2006p			5.0u11		1.0	New data for Western Australia
tzdata2006k			5.0u10	6	n/a	New data for Honduras, Bermuda, Moncton, Blanc-Sablon, Gaza, and Cuba
tzdata2006g	1.3.1_19	1.4.2_13			n/a	New data for Egypt, Syria, and Uruguay
tzdata2006d			5.0_u9		n/a	New data for Haiti, Sri Lanka, and Canada
tzdata2006a	1.3.1_18	1.4.2_12			n/a	New data for America/Indiana and America/New Brunswick. See RFE for details
tzdata2005n		1.4.2_11	5.0_u7		n/a	New data for Uruguay and Kyrgyzstan
tzdata2005m			5.0_u6		n/a	Includes the USDST 2007 data

Note: Olson 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.

The following links take you to the downloads of the latest update releases of the Java SE or J2SE platforms and the TZUpdater tool.

• TZUpdater tool
• Java SE 6
• J2SE 5.0
• J2SE 1.4.2
• J2SE 1.3.1

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