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Microsoft Knowledge Base Article

This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved. Terms of Use | Trademarks

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Article ID: 931836 - Last Review: October 8, 2011 - Revision: 18.0

February 2007 cumulative time zone update for Microsoft Windows operating systems

View products that this article applies to.

Daylight saving time update

Important The update in this article is superseded by the cumulative update in Microsoft Knowledge Base article 955839. To obtain the most recent information about daylight saving time (DST), click the following article number to view the article in the Microsoft Knowledge Base:

955839Â (http://kbalertz.com/Feedback.aspx?kbNumber=955839/ ) December 2008 cumulative time zone update for Microsoft Windows operating systems

You do not have to remove any previously installed DST update to apply this cumulative update.

INTRODUCTION

Starting in the spring of 2007, daylight saving time (DST) start and end dates for the United States will transition to comply with the Energy Policy Act of 2005. DST dates in the United States will start three weeks earlier, at 2:00 A.M. on the second Sunday in March. DST will end one week later, at 2:00 A.M. on the first Sunday in November.

The update that this article describes changes the time zone data to account for the DST change for the United States. This update also includes other DST-related changes, time zone-related changes, and settings-related changes. Some of these changes will occur in 2007. Some of these changes have occurred since the products that are listed in the "Applies To" section were originally released. The update that this article describes is a cumulative update rollup that includes all the changes that were previously released in Microsoft Knowledge Base articles 928388 and 929120. This update also describes some additional changes since the last cumulative update in Microsoft Knowledge Base article 928388.

For more information about how daylight saving time changes may affect other Microsoft products, visit the following Microsoft Web site:

http://support.microsoft.com/gp/cp_dst (http://support.microsoft.com/gp/cp_dst)

For more information about how daylight saving time changes may affect other Microsoft products, click the following article number to view the article in the Microsoft Knowledge Base:

914387Â (http://kbalertz.com/Feedback.aspx?kbNumber=914387/ ) How to configure daylight saving time for the United States in 2007

Note When you apply this update, you may receive the following message:

Update cannot be installed as a newer or same time zone update has already been installed on the system.

This message indicates that you have already applied the correct update or that Windows Updates or Microsoft Update has automatically installed this update. No additional action is required to update your Windows operating system software.

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RESOLUTION

Update information

Prerequisites

To install this update on a computer that is running Microsoft Windows XP, you must have Windows XP Service Pack 2 installed.

Restart requirement

You do not have to restart the computer after you install this update.

Uninstalling the cumulative update rollup

Windows time zone updates for Windows XP and Windows Server 2003 include custom logic. This custom logic guarantees the correct installation of time zone updates and the correct state of the Windows time zone database. This custom logic also guarantees that when you uninstall the update, the time zone database returns to the DST rules that are in effect in the year 2006 across all time zones.

You can uninstall only the highest version of the cumulative update. When you uninstall this version of the cumulative update, the time zone database reverts to the state that existed before the first update was installed. For example, if you install update 928388 in December 2006, and then you install cumulative update 931836 in February 2007, you can uninstall only cumulative update 931836. When you uninstall cumulative update 931836, the time zone database will revert to its pre-December state. Additionally, if you install cumulative update 931836, Windows will not let you install update 928388.

Update replacement information

Note You can install this cumulative update rollup even after you have installed any of the following previously-released updates.

This update replaces the following updates:

928388Â (http://kbalertz.com/Feedback.aspx?kbNumber=928388/ ) 2007 time zone update for Microsoft Windows operating systems
929120Â (http://kbalertz.com/Feedback.aspx?kbNumber=929120/ ) Windows Server 2003-based computers and Windows XP-based computers that are set to the West Australia time zone do not change to daylight saving time on December 3, 2006

File information

The English version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, 32-bit versions

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File name	File version	File size	Date	Time	Platform
Tzres.dll.mui	6.0.6000.16483	19,456	09-May-2007	08:46	Not Applicable

Windows Vista, 64-bit versions

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File name	File version	File size	Date	Time	Platform
Tzres.dll.mui	6.0.6000.16483	18,944	09-May-2007	09:59	Not Applicable

Windows Server 2003, x86-based versions

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File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Tzchange.exe	5.2.3790.642	58,368	02-Feb-2007	09:02	x86	None	RTMGDR
Tzchange.exe	5.2.3790.642	58,368	02-Feb-2007	09:51	x86	None	RTMQFE
Tzchange.exe	5.2.3790.2876	60,928	06-Feb-2007	09:17	x86	SP1	SP1GDR
Tzchange.exe	5.2.3790.2876	60,928	06-Feb-2007	09:55	x86	SP1	SP1QFE
Tzchange.exe	5.2.3790.4017	60,928	06-Feb-2007	12:37	x86	SP2	SP2GDR
Tzchange.exe	5.2.3790.4017	60,928	06-Feb-2007	14:42	x86	SP2	SP2QFE

Windows Server 2003, Itanium-based versions

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File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Tzchange.exe	5.2.3790.642	124,416	06-Feb-2007	19:35	IA-64	None	RTMGDR
Wtzchange.exe	5.2.3790.642	58,368	06-Feb-2007	19:35	x86	None	RTMGDR
Tzchange.exe	5.2.3790.642	124,416	06-Feb-2007	19:34	IA-64	None	RTMQFE
Wtzchange.exe	5.2.3790.642	58,368	06-Feb-2007	19:34	x86	None	RTMQFE
Tzchange.exe	5.2.3790.2876	136,192	06-Feb-2007	19:35	IA-64	SP1	SP1GDR
Wtzchange.exe	5.2.3790.2876	60,928	06-Feb-2007	19:35	x86	SP1	SP1GDR
Tzchange.exe	5.2.3790.2876	136,192	06-Feb-2007	19:35	IA-64	SP1	SP1QFE
Wtzchange.exe	5.2.3790.2876	60,928	06-Feb-2007	19:35	x86	SP1	SP1QFE
Tzchange.exe	5.2.3790.4017	136,192	06-Feb-2007	20:01	IA-64	SP2	SP2GDR
Wtzchange.exe	5.2.3790.4017	60,928	06-Feb-2007	20:01	x86	SP2	SP2GDR
Tzchange.exe	5.2.3790.4017	136,192	06-Feb-2007	19:35	IA-64	SP2	SP2QFE
Wtzchange.exe	5.2.3790.4017	60,928	06-Feb-2007	19:35	x86	SP2	SP2QFE

Windows Server 2003 and Windows XP, x64-based versions

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File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Tzchange.exe	5.2.3790.2876	84,992	06-Feb-2007	19:34	x64	SP1	SP1GDR
Wtzchange.exe	5.2.3790.2876	60,928	06-Feb-2007	19:34	x86	SP1	SP1GDR
Tzchange.exe	5.2.3790.2876	84,992	06-Feb-2007	19:34	x64	SP1	SP1QFE
Wtzchange.exe	5.2.3790.2876	60,928	06-Feb-2007	19:34	x86	SP1	SP1QFE
Tzchange.exe	5.2.3790.4017	84,992	06-Feb-2007	20:02	x64	SP2	SP2GDR
Wtzchange.exe	5.2.3790.4017	60,928	06-Feb-2007	20:02	x86	SP2	SP2GDR
Tzchange.exe	5.2.3790.4017	84,992	06-Feb-2007	19:33	x64	SP2	SP2QFE
Wtzchange.exe	5.2.3790.4017	60,928	06-Feb-2007	19:33	x86	SP2	SP2QFE

Windows XP with Service Pack 2

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File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Tzchange.exe	5.1.2600.3073	60,416	29-Jan-2007	08:58	x86	SP2	SP2GDR
Tzchange.exe	5.1.2600.3073	60,416	29-Jan-2007	09:25	x86	SP2	SP2QFE

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Updates from the previous cumulative Windows time zone update

The following changes have been made since the previous cumulative Windows time zone update. This was cumulative update 928388, and it was for Windows XP and Windows Server 2003:

Central Brazilian Standard Time and E. South America Standard Time
Legal confirmation of 2007 DST laws was not received in time to include in prior cumulative time zone update. This update also sets the correct time to 00:00:00 for both time zones.
Iran Standard Time
Legal confirmation that DST is no longer used was not received in time to include in prior cumulative time zone update.
Namibia
Correct DST start and end dates from prior cumulative time zone update.
Newfoundland Standard Time
Adoption of the U.S. and Canada 2007 DST rules were signed into law after the prior cumulative time zone update was created.
W. Australia Standard Time
DST trial period was signed into law after the prior cumulative time zone update was created.

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Registry subkey name	Display name	Daylight name	Standard name	DST start	DST end	Value of TZI subkey
Central Brazilian Standard Time	(GMT-04:00) Manaus	Central Brazilian Daylight Time	Central Brazilian Standard Time	First Sunday in November at 00:00:00	Last Sunday in February at 00:00:00	TZI=hex:f0,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,02,00,00,00,05,00 ,00,00,00,00,00,00,00,00,00,00,0b,00 ,00,00,01,00,00,00,00,00,00,00,00,00
E. South America Standard Time	(GMT-03:00) Brasilia	E. South America Daylight Time	E. South America Standard Time	First Sunday in November at 00:00:00	Last Sunday in February at 00:00:00	TZI=hex:b4,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,02,00,00,00,05,00 ,00,00,00,00,00,00,00,00,00,00,0b,00 ,00,00,01,00,00,00,00,00,00,00,00,00
Iran Standard Time	(GMT+03:30) Tehran	Iran Daylight Time	Iran Standard Time	Removed	Removed	TZI=hex:2e,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00
Namibia Standard Time	(GMT+02:00) Windhoek	Namibia Daylight Time	Namibia Standard Time	First Sunday in April at 02:00:00	First Sunday in September at 02:00:00	TZI=hex:88,ff,ff,ff,00,00,00,00, 3c,00,00,00,00,00,09,00,00,00,01,00 ,02,00,00,00,00,00,00,00,00,00,04,00 ,00,00,01,00,02,00,00,00,00,00,00,00
Newfoundland Standard Time	(GMT-3:30) Newfoundland	Newfoundland Daylight Time	Newfoundland Standard Time	Second Sunday of March at 00:01:00	First Sunday of November at 00:01:00	TZI=d2,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0b,00,00,00,01,00 ,00,00,01,00,00,00,00,00,00,00,03,00 ,00,00,02,00,00,00,01,00,00,00,00,00
W. Australia Standard Time	(GMT+08:00) Perth	W. Australia Daylight Time	W. Australia Standard Time	Last Sunday in October at 02:00:00	Last Sunday in March at 03:00:00	TZI=hex:20,fe,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,03,00,00,00,05,00 ,03,00,00,00,00,00,00,00,00,00,0a,00 ,00,00,05,00,02,00,00,00,00,00,00,00

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Time zones that are updated in Windows Vista

Other time zone updates that are being included with this hotfix for earlier versions and that are not listed in the following table have already been included in Windows Vista.

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Registry subkey name	Display name	Daylight name	Standard name	DST start	DST end	Value of TZI subkey
Central Brazilian Standard Time	(GMT-04:00) Manaus	Central Brazilian Daylight Time	Central Brazilian Standard Time	First Sunday in November at 00:00:00	Last Sunday in February at 00:00:00	TZI=hex:f0,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,02,00,00,00,05,00 ,00,00,00,00,00,00,00,00,00,00,0b,00 ,00,00,01,00,00,00,00,00,00,00,00,00
E. South America Standard Time	(GMT-03:00) Brasilia	E. South America Daylight Time	E. South America Standard Time	First Sunday in November at 00:00:00	Last Sunday in February at 00:00:00	TZI=hex:b4,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,02,00,00,00,05,00 ,00,00,00,00,00,00,00,00,00,00,0b,00 ,00,00,01,00,00,00,00,00,00,00,00,00
Georgian Standard Time	(GMT+03:00) Tbilisi	Georgian Daylight Time	Georgian Standard Time	Removed	Removed	TZI=hex:4c,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00
Iran Standard Time	(GMT+03:30) Tehran	Iran Daylight Time	Iran Standard Time	Removed	Removed	TZI=hex:2e,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00
Newfoundland Standard Time	(GMT-3:30) Newfoundland	Newfoundland Daylight Time	Newfoundland Standard Time	Second Sunday of March at 00:01:00	First Sunday of November at 00:01:00	TZI=hex:d2,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0b,00,00,00,01,00 ,00,00,01,00,00,00,00,00,00,00,03,00 ,00,00,02,00,00,00,01,00,00,00,00,00
W. Australia Standard Time	(GMT+08:00) Perth	W. Australia Daylight Time	W. Australia Standard Time	Last Sunday in October at 02:00:00	Last Sunday in March at 03:00:00	TZI=hex:20,fe,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,03,00,00,00,05,00 ,03,00,00,00,00,00,00,00,00,00,0a,00 ,00,00,05,00,02,00,00,00,00,00,00,00

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February 2007 cumulative DST and time zone settings

The following table outlines all the time zone changes that are included in this update.

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Registry subkey name	Display name	Daylight name	Standard name	DST start	DST end	Value of TZI subkey
Alaska Standard Time	(GMT-09:00) Alaska	Alaskan Daylight Time	Alaskan Standard Time	Second Sunday in March at 02:00:00	First Sunday in November at 02:00:00	TZI=hex:1c,02,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0b,00,00,00,01,00 ,02,00,00,00,00,00,00,00,00,00,03,00,00,00 ,02,00,02,00,00,00,00,00,00,00
Atlantic Standard Time	(GMT-04:00) Atlantic Time (Canada)	Atlantic Daylight Time	Atlantic Standard Time	Second Sunday in March at 02:00:00	First Sunday in November at 02:00:00	TZI=hex:f0,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00 ,00,00,00,00,00,00,00,00,03,00,00,00 ,02,00,02,00,00,00,00,00,00,00
AUS Eastern Standard Time	(GMT+10:00) Canberra, Melbourne, Sydney	AUS Eastern Daylight Time	AUS Eastern Standard Time	Unchanged	Last Sunday in March at 03:00:00	TZI=hex:a8,fd,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,03,00,00,00,05,00,03,00 ,00,00,00,00,00,00,00,00,0a,00,00 ,00,05,00,02,00,00,00,00,00,00,00
Azerbaijan Standard Time	(GMT+04:00) Baku	Azerbaijan Daylight Time	Azerbaijan Standard Time	Last Sunday in March at 04:00:00	Last Sunday in October at 05:00:00	TZI=hex:10,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,0a,00,00,00,05,00,05 ,00,00,00,00,00,00,00,00,00,03,00 ,00,00,05,00,04,00,00,00,00,00,00,00
Caucasus Standard Time	(GMT+04:00) Yerevan	Caucasus Daylight Time	Caucasus Standard Time	Last Sunday in March at 02:00:00	Last Sunday in October at 03:00:00	TZI=hex:10,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,0a,00,00,00,05,00,03,00 ,00,00,00,00,00,00,00,00,03,00,00 ,00,05,00,02,00,00,00,00,00,00,00
Cen. Australia Standard Time	(GMT+09:30) Adelaide	Cen. Australia Daylight Time	Cen. Australia Standard Time	Unchanged	Last Sunday in March at 03:00:00	TZI=hex:c6,fd,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,03,00,00,00,05,00,03,00,00 ,00,00,00,00,00,00,00,0a,00,00,00,05 ,00,02,00,00,00,00,00,00,00
Central Brazilian Standard Time	(GMT-04:00) Manaus	Central Brazilian Daylight Time	Central Brazilian Standard Time	First Sunday in November at 00:00:00	Last Sunday in February at 00:00:00	TZI=hex:f0,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,02,00,00,00,05,00,00 ,00,00,00,00,00,00,00,00,00,0b,00,00,00 ,01,00,00,00,00,00,00,00,00,00
Central Standard Time	(GMT-06:00) Central Time (US & Canada)	Central Daylight Time	Central Standard Time	Second Sunday in March at 02:00:00	First Sunday in November at 02:00:00	TZI=hex:68,01,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0b,00,00,00,01,00 ,02,00,00,00,00,00,00,00,00,00,03,00,00,00,02 ,00,02,00,00,00,00,00,00,00
Central Standard Time (Mexico)	(GMT-06:00) Guadalajara, Mexico City, Monterrey	Central Daylight Time (Mexico)	Central Standard Time (Mexico)	First Sunday in April at 02:00:00	Last Sunday in October at 02:00:00	TZI=hex:68,01,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,00 ,00,00,00,00,00,00,00,04,00,00,00,01 ,00,02,00,00,00,00,00,00,00
E. Europe Standard Time	(GMT+02:00) Minsk	E. Europe Daylight Time	E. Europe Standard Time	Last Sunday in March at 02:00:00	Last Sunday in October at 03:00:00	TZI=hex:88,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,0a,00,00,00,05,00 ,03,00,00,00,00,00,00,00,00,00,03,00,00,00,05,00 ,02,00,00,00,00,00,00,00
E. South America Standard Time	(GMT-03:00) Brasilia	E. South America Daylight Time	E. South America Standard Time	First Sunday in November at 00:00:00	Last Sunday in February at 00:00:00	TZI=hex:b4,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,02,00,00,00,05,00,00,00 ,00,00,00,00,00,00,00,00,0b,00,00 ,00,01,00,00,00,00,00,00,00,00,00
Eastern Standard Time	(GMT-05:00) Eastern Time (US and Canada)	Eastern Daylight Time	Eastern Standard Time	Second Sunday in March at 02:00:00	First Sunday in November at 02:00:00	TZI=hex:2c,01,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00 ,00,00,00,00,00,00,00,00,03,00 ,00,00,02,00,02,00,00,00,00,00,00,00
Egypt Standard Time	(GMT+02:00) Cairo	Egypt Daylight Time	Egypt Standard Time	Last Thursday in April at 23:59:59.999	Last Thursday in September at 23:59:59.999	TZI=hex:88,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,09,00,04,00,05,00,17 ,00,3b,00,3b,00,00,00,00,00,04,00,04 ,00,05,00,17,00,3b,00,3b,00,00,00
Georgian Standard Time	(GMT+03:00) Tbilisi	Georgian Daylight Time	Georgian Standard Time	Removed	Removed	TZI=hex:4c,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00
Greenwich Standard Time	(GMT) Casablanca, Monrovia, Reykjavik	Greenwich Daylight Time	Greenwich Standard Time	Not applicable	Not applicable	TZI=hex:00,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00
GTB Standard Time	(GMT+02:00) Athens, Bucharest, Istanbul	GTB Daylight Time	GTB Standard Time	Last Sunday of March at 3:00:00	Last Sunday in October at 04:00:00	TZI=hex:88,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,0a,00,00,00,05,00,04 ,00,00,00,00,00,00,00,00,00,03,00,00 ,00,05,00,03,00,00,00,00,00,00,00
Iran Standard Time	(GMT+03:30) Tehran	Iran Daylight Time	Iran Standard Time	Removed	Removed	TZI=hex:2e,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00
Israel Standard Time	(GMT+02:00) Jerusalem	Jerusalem Daylight Time	Jerusalem Standard Time	March 30, 2007 at 02:00:00	September 16, 2007 at 02:00:00	TZI=hex:88,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,09,00,00,00,03,00,02,00,00,00,00 ,00,00,00,00,00,03,00,05,00,05,00,02 ,00,00,00,00,00,00,00
Jordan Standard Time	(GMT+2:00) Amman	Jordan Daylight Time	Jordan Standard Time	Last Thursday in March at 0:00:00	Last Friday in September at 01:00:00	TZI=hex:88,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,09,00,05,00,05,00,01,00,00,00 ,00,00,00,00,00,00,03,00,04,00,05,00 ,00,00,00,00,00,00,00,00
Middle East Standard Time	(GMT+02:00) Beirut	Middle East Daylight Time	Middle East Standard Time	Last Sunday in March at 00:00	Last Saturday in October at 23:59:59.999	TZI=hex:88,ff,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,0a,00,06,00,05,00,17,00,3b,00 ,3b,00,e7,03,00,00,03,00,00,00,05 ,00,00,00,00,00,00,00,00,00
Montevideo Standard Time	(GMT-03:00) Montevideo	Montevideo Daylight Time	Montevideo Standard Time	First Sunday in October at 02:00:00	Second Sunday in March at 02:00:00	TZI=hex:b4,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,03,00,00,00,02,00,02,00 ,00,00,00,00,00,00,00,00,0a,00,00,00 ,01,00,02,00,00,00,00,00,00,00
Mountain Standard Time	(GMT-07:00) Mountain Time (US and Canada)	Mountain Daylight Time	Mountain Standard Time	Second Sunday in March at 02:00:00	First Sunday in November at 02:00:00	TZI=hex:a4,01,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,00 ,00,00,00,00,00,00,03,00,00,00,02 ,00,02,00,00,00,00,00,00,00
Mountain Standard Time (Mexico)	(GMT-07:00) Chihuahua, La Paz, Mazatlan	Mountain Daylight Time (Mexico)	Mountain Standard Time (Mexico)	First Sunday in April at 02:00:00	Last Sunday in October at 02:00:00	TZI=hex:a4,01,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,00,00,00,00,00 ,00,00,00,04,00,00,00,01,00,02 ,00,00,00,00,00,00,00
Myanmar Standard Time	(GMT+06:30) Yangon (Rangoon)	Myanmar Daylight Time	Myanmar Standard Time	Not applicable	Not applicable	TZI=hex:7a,fe,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00
Namibia Standard Time	(GMT+02:00) Windhoek	Namibia Daylight Time	Namibia Standard Time	First Sunday in April at 02:00:00	First Sunday in September at 02:00:00	TZI=hex:88,ff,ff,ff,00,00,00,00, 3c,00,00,00,00,00,09,00,00,00,01,00 ,02,00,00,00,00,00,00,00,00,00,04,00,00 ,00,01,00,02,00,00,00,00,00,00,00
New Zealand Standard Time	(GMT+12:00) Auckland, Wellington	New Zealand Daylight Time	New Zealand Standard Time	First Sunday in October at 02:00:00	Third Sunday in March at 03:00:00	TZI=hex:30,fd,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,03,00,00,00,03,00,03,00,00,00 ,00,00,00,00,00,00,0a,00,00,00,01,00,02,00 ,00,00,00,00,00,00
Newfoundland Standard Time	(GMT-3:30) Newfoundland	Newfoundland Daylight Time	Newfoundland Standard Time	Second Sunday of March at 00:01:00	First Sunday of November at 00:01:00	TZI=hex:d2,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0b,00,00,00,01,00,00 ,00,01,00,00,00,00,00,00,00,03,00,00,00,02,00,00,00 ,01,00,00,00,00,00
Pacific SA Standard Time	(GMT-04:00) Santiago	Pacific SA Daylight Time	Pacific SA Standard Time	Second Saturday in October at 23:59:59.999	Second Saturday in March at 23:59:59.999	TZI=hex:f0,00,00,00,00,00,00,00, c4,ff,ff,ff,00,00,03,00,06,00,02,00,17 ,00,3b,00,3b,00,e7,03,00,00,0a,00,06 ,00,02,00,17,00,3b,00,3b,00,e7,03
Pacific Standard Time	(GMT-08:00) Pacific Time (US & Canada)	Pacific Daylight Time	Pacific Standard Time	Second Sunday in March at 02:00:00	First Sunday in November at 02:00:00	TZI=hex:e0,01,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00 ,00,00,00,00,00,00,00,00,03,00,00,00,02,00 ,02,00,00,00,00,00,00,00
Pacific Standard Time (Mexico)	(GMT-08:00) Tijuana, Baja California	Pacific Daylight Time (Mexico)	Pacific Standard Time (Mexico)	First Sunday in April at 02:00:00	Last Sunday in October at 02:00:00	TZI=hex:e0,01,00,00,00,00,00,00, c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,00,00,00,00 ,00,00,00,00,04,00,00,00,01,00 ,02,00,00,00,00,00,00,00
SA Pacific Standard Time	(GMT-05:00) Bogota, Lima, Quito, Rio Branco	SA Pacific Daylight Time	SA Pacific Standard Time	Not applicable	Not applicable	TZI=hex:2c,01,00,00,00,00,00,00, c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00
Sri Lanka Standard Time	(GMT+05:30) Sri Jayawardenepura	Sri Lanka Daylight Time	Sri Lanka Standard Time	Not applicable	Not applicable	TZI=hex:b6,fe,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 ,00,00,00,00,00,00
Tasmania Standard Time	(GMT+10:00) Hobart	Tasmania Daylight Time	Tasmania Standard Time	Unchanged	Last Sunday in March at 03:00:00	TZI=hex:a8,fd,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,03,00,00,00,05,00,03,00,00,00,00 ,00,00,00,00,00,0a,00,00,00,01,00,02 ,00,00,00,00,00,00,00
W. Australia Standard Time	(GMT+08:00) Perth	W. Australia Daylight Time	W. Australia Standard Time	Last Sunday in October at 02:00:00	Last Sunday in March at 03:00:00	TZI=hex:20,fe,ff,ff,00,00,00,00, c4,ff,ff,ff,00,00,03,00,00,00,05,00,03,00 ,00,00,00,00,00,00,00,00,0a,00,00,00,05,00 ,02,00,00,00,00,00,00,00

Additional registry keys

In addition to the changes that are listed in the previous table, this update adds registry keys that store historical DST data for certain time zones. These keys are present in Windows Vista and are included to keep parity in the Windows time zone registry structure.

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Alaskan Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d6
"LastEntry"=dword:000007d7
"2006"=hex:1c,02,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,\ 00,00,00,00,00,00,00,00,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2007"=hex:1c,02,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,\ 00,00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Atlantic Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d6
"LastEntry"=dword:000007d7
"2006"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,\ 00,00,00,00,00,00,00,00,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2007"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,\ 00,00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Central Brazilian Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d6
"LastEntry"=dword:000007d7
"2006"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,02,00,00,00,02,00,02,00,\ 00,00,00,00,00,00,00,00,0b,00,00,00,01,00,00,00,00,00,00,00,00,00
"2007"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,02,00,00,00,05,00,00,00,\ 00,00,00,00,00,00,00,00,0b,00,00,00,01,00,00,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Central Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d6
"LastEntry"=dword:000007d7
"2006"=hex:68,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,\ 00,00,00,00,00,00,00,00,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2007"=hex:68,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,\ 00,00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\E. South America Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d6
"LastEntry"=dword:000007d7
"2006"=hex:b4,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,02,00,00,00,02,00,02,00,\ 00,00,00,00,00,00,00,00,0b,00,00,00,01,00,00,00,00,00,00,00,00,00
"2007"=hex:b4,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,02,00,00,00,05,00,00,00,\ 00,00,00,00,00,00,00,00,0b,00,00,00,01,00,00,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Eastern Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d6
"LastEntry"=dword:000007d7
"2006"=hex:2c,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,\ 00,00,00,00,00,00,00,00,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2007"=hex:2c,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,\ 00,00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Iran Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d5
"LastEntry"=dword:000007d6
"2005"=hex:2e,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,09,00,02,00,04,00,02,00,\ 00,00,00,00,00,00,00,00,03,00,00,00,01,00,02,00,00,00,00,00,00,00
"2006"=hex:2e,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\ 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Israel Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d4
"LastEntry"=dword:000007e7
"2004"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\ 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"2005"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,d5,07,0a,00,00,00,09,00,02,00,\ 00,00,00,00,00,00,d5,07,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2006"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,d6,07,0a,00,00,00,01,00,02,00,\ 00,00,00,00,00,00,d6,07,03,00,00,00,1f,00,02,00,00,00,00,00,00,00
"2007"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,d7,07,09,00,00,00,10,00,02,00,\ 00,00,00,00,00,00,d7,07,03,00,00,00,1e,00,02,00,00,00,00,00,00,00
"2008"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,d8,07,0a,00,00,00,05,00,02,00,\ 00,00,00,00,00,00,d8,07,03,00,00,00,1c,00,02,00,00,00,00,00,00,00
"2009"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,d9,07,09,00,00,00,1b,00,02,00,\ 00,00,00,00,00,00,d9,07,03,00,00,00,1b,00,02,00,00,00,00,00,00,00
"2010"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,da,07,09,00,00,00,0c,00,02,00,\ 00,00,00,00,00,00,da,07,03,00,00,00,1a,00,02,00,00,00,00,00,00,00
"2011"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,db,07,0a,00,00,00,02,00,02,00,\ 00,00,00,00,00,00,db,07,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2012"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,dc,07,09,00,00,00,17,00,02,00,\ 00,00,00,00,00,00,dc,07,03,00,00,00,1e,00,02,00,00,00,00,00,00,00
"2013"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,dd,07,09,00,00,00,08,00,02,00,\ 00,00,00,00,00,00,dd,07,03,00,00,00,1d,00,02,00,00,00,00,00,00,00
"2014"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,de,07,09,00,00,00,1c,00,02,00,\ 00,00,00,00,00,00,de,07,03,00,00,00,1c,00,02,00,00,00,00,00,00,00
"2015"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,df,07,09,00,00,00,14,00,02,00,\ 00,00,00,00,00,00,df,07,03,00,00,00,1b,00,02,00,00,00,00,00,00,00
"2016"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,e0,07,0a,00,00,00,09,00,02,00,\ 00,00,00,00,00,00,e0,07,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2017"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,e1,07,09,00,00,00,18,00,02,00,\ 00,00,00,00,00,00,e1,07,03,00,00,00,1f,00,02,00,00,00,00,00,00,00
"2018"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,e2,07,09,00,00,00,10,00,02,00,\ 00,00,00,00,00,00,e2,07,03,00,00,00,1e,00,02,00,00,00,00,00,00,00
"2019"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,e3,07,0a,00,00,00,06,00,02,00,\ 00,00,00,00,00,00,e3,07,03,00,00,00,1d,00,02,00,00,00,00,00,00,00
"2020"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,e4,07,09,00,00,00,1b,00,02,00,\ 00,00,00,00,00,00,e4,07,03,00,00,00,1b,00,02,00,00,00,00,00,00,00
"2021"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,e5,07,09,00,00,00,0c,00,02,00,\ 00,00,00,00,00,00,e5,07,03,00,00,00,1a,00,02,00,00,00,00,00,00,00
"2022"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,e6,07,0a,00,00,00,02,00,02,00,\ 00,00,00,00,00,00,e6,07,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2023"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\ 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Mountain Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d6
"LastEntry"=dword:000007d7
"2006"=hex:a4,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,\ 00,00,00,00,00,00,00,00,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2007"=hex:a4,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,\ 00,00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Newfoundland Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d6
"LastEntry"=dword:000007d7
"2006"=hex:d2,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,00,00,\ 01,00,00,00,00,00,00,00,04,00,00,00,01,00,00,00,01,00,00,00,00,00
"2007"=hex:d2,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,00,00,\ 01,00,00,00,00,00,00,00,03,00,00,00,02,00,00,00,01,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Pacific Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d6
"LastEntry"=dword:000007d7
"2006"=hex:e0,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,\ 00,00,00,00,00,00,00,00,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2007"=hex:e0,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,\ 00,00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\W. Australia Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d5
"LastEntry"=dword:000007d7
"2005"=hex:20,fe,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\ 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"2006"=hex:20,fe,ff,ff,00,00,00,00,c4,ff,ff,ff,d6,07,01,00,00,00,01,00,00,00,\ 00,00,00,00,00,00,d6,07,0c,00,05,00,01,00,02,00,00,00,00,00,00,00
"2007"=hex:20,fe,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,03,00,00,00,05,00,03,00,\ 00,00,00,00,00,00,00,00,0a,00,00,00,05,00,02,00,00,00,00,00,00,00

Mexico time zones

Three new time zones have been added for Mexico on Windows XP and Windows Server 2003 to keep the time zone databases in parity with Vista. The new time zones are required because some time zones that Mexico previously shared U.S. and with Canada are no longer shared. This is because of the new DST rules that are in effect for the U.S. and for Canada. When a computer that is set to Mexico Standard Time or to Mexico Standard Time 2 installs this update, the computer will be automatically set to the new time zone that is listed in the following table. However, this is not true for computers that are set to the GMT-08:00 time zone (Pacific Standard Time). If applicable, these computers must be manually set to the new Pacific Standard Time (Mexico) time zone.

Collapse this tableExpand this table

2006 Time Zone Name	2006 Display name	2007 Time Zone name	2007 Display Name
Mexico Standard Time	(GMT-06:00) Guadalajara, Mexico City, Monterrey	Central Standard Time (Mexico)	(GMT-06:00) Guadalajara, Mexico City, Monterrey - New
Mexico Standard Time 2	(GMT-07:00) Chihuahua, La Paz, Mazatlan	Mountain Standard Time (Mexico)	(GMT-07:00) Chihuahua, La Paz, Mazatlan - New
Not applicable	Not applicable	Pacific Standard Time (Mexico)	(GMT-08:00) Tijuana, Baja California

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MORE INFORMATION

Known issues

When you install this update on a computer that is running Windows Server 2003 with Service Pack 1, and you then install Windows Server 2003 Service Pack 2, Bucharest no longer appears in the display name of the GTB time zone. GTB Standard Time appears as "(GMT +02:00) Athens, Beirut, Istanbul, Minsk" instead of as "(GMT +02:00) Athens, Bucharest, Istanbul." This issue will be corrected in a future update. To work around this issue, you can use the Time Zone Editor (Tzedit.exe) to modify the display name. Or, you can type the following command at the command prompt:

%systemroot%\system32\tzchange.exe /F "GTB Standard Time" /N "(GMT+02:00) Athens, Bucharest, Istanbul"

The following file is available for download from the Microsoft Download Center:

Collapse this imageExpand this image

Download the Tzedit.exe utility package now. (http://download.microsoft.com/download/5/8/a/58a208b7-7dc7-4bc7-8357-28e29cdac52f/TZEDIT.exe)

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591Â (http://kbalertz.com/Feedback.aspx?kbNumber=119591/ ) How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file. For more information about the terms that are used to describe software updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684Â (http://kbalertz.com/Feedback.aspx?kbNumber=824684/ ) Description of the standard terminology that is used to describe Microsoft software updates

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Technical revisions

The revision number and review dates for this article may reflect minor editorial or structural revisions to this content. The major technical revisions to this content are listed in this table.

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Date	Revisions
February 8, 2007	Original version
February 13, 2007	Updated the table in the "Mexico time zones" section
February 17, 2007	Added new file list for packages released 14-Feb-2007
February 23, 2007	The following changes were made to this article: Added Microsoft Windows XP Tablet PC Edition 2004 and Microsoft Windows Server 2003 Web Edition to the "Applies to" section Newfoundland table entries updated
February 27, 2007	Added Windows XP Tablet PC Edition to "Applies to" section
February 28, 2007	The following changes were made to this article: Replaced Windows XP Home Edition SP2 and Windows XP Professional SP2 with Windows XP Home Edition and Windows XP Professional in the "Applies to" section Updated Newfoundland table entries
March 5, 2007	The following changes were made to this article: Updated file information table from "Windows 2000 Service Pack 5" to "Windows 2000 Service Pack 4" Updated Newfoundland table entries
May 8, 2007	Added a note about an error message to the end of the "Introduction" section.
May 16, 2007	Added the "Known Issues" section.
June 26, 2007	Added Windows Vista update information.
June 29, 2007	Made Windows Vista update information public (It was outsourcer) and added line "Other time zone updates that are being included with this hotfix for earlier versions and that are not listed in the following table have already been included in Windows Vista." Also corrected titles in first two KB ref links in the article.
July 9, 2007	Added the Important note to the top of the article referencing Microsoft Knowledge Base article 933360.
September 11, 2008	Replaced the Important note at the top referencing 933360. Updated with the latest cumulative update: Microsoft Knowledge Base article 951072.
February 24, 2009	Replaced the reference to Knowledge Base article 951072 at the top of the article with a reference to 955839.

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APPLIES TO

Windows Vista Home Basic
Windows Vista Home Premium
Windows Vista Ultimate
Windows Vista Business
Windows Vista Enterprise
Windows Vista Home Basic 64-bit Edition
Windows Vista Home Premium 64-bit Edition
Windows Vista Ultimate 64-bit Edition
Windows Vista Enterprise 64-bit Edition
Windows Fundamentals for Legacy PCs
Windows Embedded for Point of Service
Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)
Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)
Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)
Microsoft Windows Server 2003 R2 Standard x64 Edition
Microsoft Windows Server 2003 R2 Enterprise x64 Edition
Microsoft Windows Server 2003 R2 Datacenter x64 Edition
Microsoft Windows Small Business Server 2003 R2 Standard Edition
Microsoft Windows Small Business Server 2003 R2 Premium Edition
Microsoft Windows Small Business Server 2003 Standard Edition
Microsoft Windows Small Business Server 2003 Premium Edition
Microsoft Windows Server 2003, Standard Edition (32-bit x86)
Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
Microsoft Windows Server 2003, Web Edition
Microsoft Windows Server 2003, Standard x64 Edition
Microsoft Windows Server 2003, Enterprise x64 Edition
Microsoft Windows Server 2003, Datacenter x64 Edition
Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional
Microsoft Windows XP Professional x64 Edition
Microsoft Windows XP Tablet PC Edition
Microsoft Windows XP Media Center Edition 2005
Microsoft Windows XP Media Center Edition 2004

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kbvistasp1fix kbresolve kbwinxppresp3fix kbexpertiseinter atdownload kbinfo kbHotfixServer kbqfe KB931836

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February 2007 cumulative time zone update for Microsoft Windows operating systems

Microsoft Knowledge Base Article

February 2007 cumulative time zone update for Microsoft Windows operating systems

Daylight saving time update

On This Page

INTRODUCTION

RESOLUTION

Update information

Prerequisites

Restart requirement

Uninstalling the cumulative update rollup

Update replacement information

File information

Windows Vista, 32-bit versions

Windows Vista, 64-bit versions

Windows Server 2003, x86-based versions

Windows Server 2003, Itanium-based versions

Windows Server 2003 and Windows XP, x64-based versions

Windows XP with Service Pack 2

Updates from the previous cumulative Windows time zone update

Time zones that are updated in Windows Vista

February 2007 cumulative DST and time zone settings

Additional registry keys

Mexico time zones

MORE INFORMATION

Known issues

Technical revisions

APPLIES TO

Keywords:Â