Missing Event Processing Rule Properties, Schedule Tab

Allows you to specify when you expect the event to occur. If the event does not occur in this time frame, it is considered a missing event.

Between ___ and ___
Specifies the start and stop time to watch for the event. To specify that you want to watch overnight for an event, specify a start time later than an stop time and check both days.
Sunday through Saturday
Specifies to watch for the event on the checked day of the week.