Why is my Outlook calendar now showing holidays as 2 day periods?

[reedthis]

Starting this month, my Outlook calendar is showing holidays, such as Easter
and Tax Day, as two full days. Why, and how do I fix it?

 

[Brian Tillman]

Starting this month, my Outlook calendar is showing holidays, such as
Easter and Tax Day, as two full days. Why, and how do I fix it?

You have a DST setting issue. Did you use the TZMove tool Microsoft
supplied for the recent time change?

 

[Oliver Vukovics]

Hi reedthis,

in addition to Brians posting, here the Microsoft website with the different
settings:
http://support.microsoft.com/kb/197850/en-us