2007 time zone update for Windows XP and Windows Server 2003

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Learn what this means for you and how to stay protected.

Article ID: 928388 - View products that this article applies to.

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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Important The update in this article is superseded by the cumulative update in Microsoft Knowledge Base article 955839.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:

955839

(http://support.microsoft.com/kb/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.

Important Updates are available on Windows Update and on Microsoft Update that enable Windows to correctly apply the changes for daylight saving time (DST) 2007 and later. After these updates are applied, Windows correctly calculates the current offsets from UTC time to local time on the computer when DST occurs. The offsets include the offsets for the base APIs and for the networking time-related APIs. You can visit the Microsoft Update Web site by visiting the following Microsoft Web site:

http://update.microsoft.com

(http://update.microsoft.com)

For more information about the Automatic Updates feature in Windows, click the following article number to view the article in the Microsoft Knowledge Base:

294871

(http://support.microsoft.com/kb/294871/ )

Description of the Automatic Updates feature in Windows

Before you apply the 2007 cumulative time zone update for Windows operating systems, be aware of potential issues that may affect Microsoft Office Outlook. For more information about these issues, click the following article number to view the article in the Microsoft Knowledge Base:

931667

(http://support.microsoft.com/kb/931667/ )

How to address the daylight saving time changes in 2007 by using the Time Zone Data Update Tool for Microsoft Office Outlook

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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 (2:00 A.M. on the second Sunday in March) and will end one week later (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 United States DST change. This time zone update will also include changes for other related DST changes, time zone behavior, and settings. Some of these changes will occur in 2007, and some have occurred since these versions of Windows were originally released. The update that this article describes also includes some changes that have previously been released as individual hotfixes. An example of this is the Sri Lanka change in time zone offset. This update will also include some changes that have been individually documented in Microsoft Knowledge Base articles.

These updated time zone definitions will also be included with Windows Vista.

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 how to manually update computers that are running Microsoft Windows XP or Microsoft Windows 2000, click the following article number to view the article in the Microsoft Knowledge Base:

914387

(http://support.microsoft.com/kb/914387/ )

How to configure daylight saving time for the United States in 2007

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Resolution

Updates are available on Windows Update and on Microsoft Update that enable Windows to correctly apply the changes for DST 2007 and later years. After these updates are applied, Windows correctly calculates the current offsets from UTC time to local time on the computer when DST occurs. The offsets include the offsets for the base APIs and for the networking time-related APIs. You can visit the Microsoft Update Web site by visiting the following Microsoft Web site:

http://update.microsoft.com

(http://update.microsoft.com)

For more information about the Automatic Updates feature in Windows, click the following article number to view the article in the Microsoft Knowledge Base:

294871

(http://support.microsoft.com/kb/294871/ )

Description of the Automatic Updates feature in Windows

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.

Microsoft 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	5.2.3790.615	58,368	18-Nov-2006	12:03	x86	None	RTMGDR
Tzchange.exe	5.2.3790.615	58,368	18-Nov-2006	12:10	x86	None	RTMQFE
Tzchange.exe	5.2.3790.2836	60,928	18-Nov-2006	12:29	x86	SP1	SP1GDR
Tzchange.exe	5.2.3790.2836	60,928	18-Nov-2006	12:42	x86	SP1	SP1QFE

Microsoft Windows Server 2003, x64-based versions

Collapse this tableExpand this table

File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Tzchange.exe	5.2.3790.2836	84,992	18-Nov-2006	16:04	x64	SP1	SP1GDR
Wtzchange.exe	5.2.3790.2836	60,928	18-Nov-2006	16:04	x86	SP1	WOW
Tzchange.exe	5.2.3790.2836	84,992	18-Nov-2006	15:59	x64	SP1	SP1QFE
Wtzchange.exe	5.2.3790.2836	60,928	18-Nov-2006	15:59	x86	SP1	WOW

Microsoft Windows Server 2003, Itanium-based versions

Collapse this tableExpand this table

File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Tzchange.exe	5.2.3790.615	124,416	18-Nov-2006	15:59	IA-64	None	RTMGDR
Wtzchange.exe	5.2.3790.615	58,368	18-Nov-2006	15:59	x86	None	WOW
Tzchange.exe	5.2.3790.615	124,416	18-Nov-2006	15:59	IA-64	None	RTMQFE
Wtzchange.exe	5.2.3790.615	58,368	18-Nov-2006	15:59	x86	None	WOW
Tzchange.exe	5.2.3790.2836	136,192	18-Nov-2006	16:04	IA-64	SP1	SP1GDR
Wtzchange.exe	5.2.3790.2836	60,928	18-Nov-2006	16:04	x86	SP1	WOW
Tzchange.exe	5.2.3790.2836	136,192	18-Nov-2006	15:59	IA-64	SP1	SP1QFE
Wtzchange.exe	5.2.3790.2836	60,928	18-Nov-2006	15:59	x86	SP1	WOW

Microsoft Windows XP update information

Collapse this tableExpand this table

File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Tzchange.exe	5.1.2600.3037	60,416	18-Nov-2006	11:44	x86	SP2	SP2GDR
Tzchange.exe	5.1.2600.3037	60,416	18-Nov-2006	13:19	x86	SP2	SP2QFE

Restart requirement

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

DST and time zone settings

Collapse this tableExpand this table

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 02:00:00	Last Sunday in February at 02:00:00	TZI=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff ,00,00,02,00,00,00,05,00,02,00,00, 00,00,00,00,00,00,00,0b,00,00,00, 01,00,02,00,00,00,00,00,00,00
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 02:00:00	Last Sunday in February at 02:00:00	TZI=hex:b4,00,00,00,00,00,00,00,c4 ,ff,ff,ff,00,00,02,00,00,00,05,00,02,00 ,00,00,00,00,00,00,00,00,0b,00,00,00, 01,00,02,00,00,00,00,00,00,00
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	Not applicable	Not applicable	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
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 September at 02:00:00	First Sunday in April 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
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

For more information about DST changes in 2007, and for links to information about other Microsoft products and time zone changes, visit the following Microsoft Web site:

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

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

Additional registry keys in Windows Vista

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. The additional registry keys are not used by versions of Windows earlier than Windows Vista. The information is provided for other programs that may use the information to predict or to compute future and past time zone information.

[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: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\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\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,00,00,00,05,00,02,00,00,00,00,00,00,00,00,00,04,00,00,00,01,00,02,00,00,00,00,00,00,00
"2007"=hex:d2,00,00,00,00,00,00,00,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\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

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For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684

(http://support.microsoft.com/kb/824684/ )

Description of the standard terminology that is used to describe Microsoft software updates

Revisions

Collapse this tableExpand this table

Version	Date	Change
1.0	21-Nov-2006	Original version
2.0	22-Nov-2006	Corrected the file attributes tables
2.1	22-Nov-2006	Corrected typographical error
3.0	29 Nov-2006	Added an Atlantic Standard Time entry in the DST and time zone settings table between Alaska Standard Time and AUS Eastern Standard Time entries
4.0	29-Nov-2006	Made corrections to Greenwich Standard Time and GTB Standard Time entries
5.0	04-Dec-2006	Changed DST and time zone settings for Central Brazilian Standard Time
6.0	04-Dec-2006	Metadata keyword changes
7.0	12-Dec-2006	Changed DST and time zone settings for Egypt Standard Time
7.1	19-Dec-2006	Added Windows Server 2003 R2 to "Applies To" section
8.0	27-Dec-2006	Complete article rewrite
8.1	27-Dec-2006	Added caveats for customers who use Exchange and Outlook in their environments and refer to http://office.microsoft.com/en-us/outlook/HA102086071033.aspx
9.0	19-Jan-2007	Updated with warnings
9.1	19-Jan-2007	Added main DST 2007 link to the "DST and time zone settings" section
9.2	19-Jan-2007	Added cross-reference to KB article 914387
10.0	22-Jan-2007	MSINTERNAL section updates
10.1	22-Jan-007	Changed DST and time zone settings for Middle East and Montevideo time zones
10.2	26-Jan-2007	Added revision list, MCE, WePOS, and WinFLP to "Applies To" section
11.0	9-Feb-2007	Changed DST and time zone settings (hex value) for Namibia
12.0	13-Feb-2007	Revised "Resolution" section so that it points to point to KB article 931836
13.0	1-Mar-2007	Updated DST link in the "Introduction" section and in the "DST and time zone settings" section
14.0	23-Mar-2007	Made changes per Windows Server 2003 SP2 sweep. (Added service pack section.)
15.0	27-Mar-2007	Corrected TZI value for Nambia.
15.1	3-Apr-2007	Corrected TZI value for Nambia.
16.0	6-Aug-2007	Updated references to point to article 933360
20.0	27-Sep-2007	Updated the "Important" note in the beginning of the article and the "Resolution" secton of the article. That update states that future DST updates are available from Windows Update and Microsoft Update. Also added the "Restart requirement " section to the "Resolution" section.
	14 Jan 2008	updated references to point from 933350 to 942763
	9 Sept 2008	Removed references to 942763. Added reference to 951072.
	24 Jan 2009	Removed references to 951072. Added reference to 955839.