Purple drank is correct.
The day after a vacation you cannot be required to report for any trip before noon.
Section 23.S.2.a.5
So the earliest short call they could give you is 10 AM.

Also, there is no "last non-fly day schedule check" required on vacation.

Basically what that means is you go on long call at midnight. You can look at your schedule earlier than that if you want and acknowledge anything on there. If you see a short call for the next day at 10 AM and you choose not to acknowledge it then you can expect a midnight phone call.