Originally Posted by
capncrunch
As far as I know, you can be assigned SC any time on your first day back, no restrictions.
Never heard the nothing before noon thing...
I believe that they cannot assign you anything that reports/starts(SC) earlier than 5 hours after the end of your off period.
Not sure if there is some special exception for vacation, however. If not, then I believe the earliest they can have you do SC is 0500.