On November 4, it"s time to fall back, in terms of Daylight Saving Time (DST) in the U.S. Microsoft users: DST D-day is Sunday
If you haven"t already done so, you might want to make doubly sure that all your Microsoft (and non-Microsoft) software that revolves around dates/times is updated. Microsoft has published a list of Microsoft products that are affected by DST. In short, any and all Windows operating systems and calendar programs need updating.
More DST guidance for Microsoft users is available on Microsoft"s Daylight Saving Time Help and Support Center site.