New Daylight Savings Time dates effective for 2007:

  • Begin: 2:00 AM, March 11, 2007 (was April 1, 2007)
  • End: 2:00 AM, November 4, 2007 (was October 28, 2007)

Given the broad range of technology in use today and the integration of systems between customers, vendors, and partners, IT managers should determine what actions should be taken to mitigate the affects of DST 2007 on their organizations. [more] 

Microsoft is providing updates for supported systems and applications. If these updates are not applied:
  • Outlook calendar entries will be off for 1 hour for a 3 week period at the beginning of DST, and for one week at the end of DST.
  • Any process that relies on a calendar/time entry, i.e. backup jobs, will run one hour earlier than intended.
The following Microsoft products have an update available for Daylight Savings Time:
  • Windows XP SP2
  • Windows Server 2003
  • Windows Server 2003 SP1
  • Exchange Server 2003 SP1
  • Exchange Server 2003 SP2
  • Office Outlook 2007/2003/XP/2000

The following products are not supported, but can be updated manually:

  • Windows XP SP1
  • Windows 2000
  • Windows 95/98
  • Windows NT4

Please take the following steps to determine if your systems or applications are supported for the Microsoft updates:

  1. Determine the Operating System version and Service Pack level for all servers and client computers.
  2. Determine version and Service Pack level for Microsoft Outlook. Outlook is usually installed as a part of Microsoft Office.

For more detailed information, go to:

Once the updates are applied, please check Outlook calendar entries to be sure they are scheduled for the correct time. Microsoft has suggested that you enter the time in the subject of the appointment or meeting request so that none of the attendees are confused.