If you are having problems with Outlook’s appointment times after daylight time changes, make sure you have the newest time zone definitions for your operating system and use the Outlook appointment rebaser tool.
See //support2.microsoft.com/kb/928388 for more information about time zones. Also try the time zone wizard at //support.microsoft.com/gp/cp_dst.
The appointment rebaser is at //www.microsoft.com/downloads/details.aspx?familyid=e343a233-b9c8-4652-9dd8-ae0f1af62568&displaylang=en. Outlook 2007 has an early version of this tool but you should use the download version. (The tool was removed from Outlook 2007 SP2.)
Published March 9, 2009. Last updated on June 7, 2021.