Daylight Saving Time Alert
The Energy Policy Act of 2005 changes the starting and ending dates for Daylight Saving Time (DST) in the United States. Beginning in 2007, DST will begin on the second Sunday in March (11th) and end on the first Sunday in November (4th). This results in a new DST period that is four weeks longer than in previous years.
Microsoft has provided a patch for the new DST settings as part of the February automatic updates for Windows XP Service Pack 2 only. You can check for installation of this update on your system by going to Control Panel/Add or Remove Programs (making sure that “show updates” at the top is checked). The fix will be listed as “Update for Windows XP (KB931836)”.
You can also look up the original Microsoft Knowledge Base article by going to:
If you are running Windows 2000 you will have to update the DST settings manually. Microsoft has provided a time zone edit program available at
Scroll down to “Time Zone Editor” and download the tzedit.exe program. After installing the program, run it and set the DST parameters to
Start Day: Second Sunday of March at 2:00:00 AM
Last Day: First Sunday of November at 2:00:00 AM
Microsoft Office Outlook users may also need to adjust their calendars. For information, see the Knowledge Base article at:
General DST information is also available at: