Cogran registrations can open and close at specific times, as well as days. This is set on the registration period. Note that by default, registration will open at 12:01 AM on the registration start date.

Registration Setup

Registration Period> Search

Select edit. A modal opens. Navigate to tab 2, Registration Dates.

On tab 2, set Registration Start Time/End Time. This start time will override the automatic 12:01 AM start and 11:59 PM end time.
Save.