Actually, UTC isn't enough for storing a date, at least not a date in the future. If I schedule a single event for 3pm on October 1 (currently in the future), I

Actually, UTC isn't enough for storing a date, at least not a date in the future. If I schedule a single event for 3pm on October 1 (currently in the future), I expect it to stay at 3pm. Even if my city hosts the Olympics: http://support.microsoft.com/kb/257178 http://support.microsoft.com/kb/257178 Note also that not all governments are in the habit of giving sufficiently advance notice of daylight saving changes.