A test version of the 2007 global time zone update for Windows is available

A test version of a time zone update for 2007 is now available for computers that are running Microsoft Windows Server 2003 and Microsoft Windows XP. In the spring of 2007, the start dates and the end dates for DST in the United States will change to comply with the Energy Policy Act of 2005. The dates will change as follows:

• DST starts on the second Sunday in March at 2:00 A.M. Therefore, DST in 2007 starts three weeks earlier than DST in 2006.
• DST ends on the first Sunday in November at 2:00 A.M. Therefore, DST ends one week later than in prior years.

The test version of the global time zone update that Microsoft will release is now available. The update includes the new start dates and end dates for DST in the United States. Additionally, the update includes the following:

• Changes to DST and time zone settings that occur around the world in 2007.
• Changes to DST and time zone settings that have occurred since the products in the "Applies to" section were originally released. For example, the update includes some changes that were previously released as individual updates that were documented in articles in the Microsoft Knowledge Base.

To apply the changes, the update modifies time zone settings in the registry and registers the changes in Microsoft Windows. To view a list of these registry settings, see the "DST and Time Zone Settings" section later in this article.

Service pack information

This update is included in Microsoft Windows Server 2003 Service Pack 2. For more information about the latest service pack for Windows Server 2003, click the following article number to view the article in the Microsoft Knowledge Base:

Microsoft Windows Server 2003 update information

Important The test version that this article describes has expired. In preparation for the final release of the 2007 time zone update, make sure that you uninstall the test version from all computers.

A supported update is now available from Microsoft, but it is only intended for use in testing environments. A final version of this update will be released later in 2006.

Restart requirement

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

Update replacement information

This update replaces the following updates:

• 913670 An update is available to remove the Australian daylight saving time 2006 912475 update
• 918093 New time zone update for Sri Lanka
• 921028 A hotfix is available to change the daylight saving time for the (GMT+02:00) Cairo time zone in 2006 for Windows XP and for Windows Server 2003

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 Server 2003, x86-based versions

Windows Server 2003, x64-based versions

Windows Server 2003, Itanium-based versions

Microsoft Windows XP update information

Important The test version that this article describes has expired. In preparation for the final release of the 2007 time zone update, make sure that you uninstall the test version from all computers.

A supported update is now available from Microsoft, but it is only intended for use in testing environments. A final version of this update will be released later in 2006.

Restart requirement

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

Update replacement information

This update replaces the following updates:

• 913670 An update is available to remove the Australian daylight saving time 2006 912475 update
• 918093 New time zone update for Sri Lanka
• 921028 A hotfix is available to change the daylight saving time for the (GMT+02:00) Cairo time zone in 2006 for Windows XP and for Windows Server 2003

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.