Daylight Saving Time changes for the U.S. and Canada in 2007

One of the key provisions of the Energy Policy Act of 2005 was to extend Daylight Saving Time (DST) by approximately four weeks. In compliance with this provision, beginning in 2007 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).


Microsoft is committed to making this transition as seamless as possible for our users affected by the new Daylight Saving Time changes. As a service to customers, Microsoft will be producing an update for Windows products as well as other Microsoft products affected by the new U.S. statute. These updates will be released through technical support channels including Microsoft Customer Support Services (CSS), as well as online channels such as Windows Update and Microsoft Update.


Details of the updates for Microsoft Windows and affected Microsoft applications, how customers can acquire them and when they will be available can be found on the Microsoft website at .   Corresponding Technical Knowledge Base Articles can be linked to from this website as well.

Microsoft is providing the Time Zone updates at no-cost for customers on Windows platforms that are covered by mainstream support. Customers who have an Extended Hotfix Support Agreement can request a hotfix for products in Extended Support. For more information on the current support status of your Microsoft products and the Support Lifecycle Policy, please visit”


Here is a KB article with more details on how to configure daylight saving time for 2007. Please see