You cannot request time off for a date in the past.  If you use leave time without requesting it in advance through the time off request process, you will need to enter the time directly on your timesheet.  See the user guide and/or training for your policy profile or the FAQ below for more details on entering time on your timesheet:

Classified Hourly - Enter Time on Timesheet

Classified Salaried Exempt - Enter Time on Timesheet

Classified Salaried Non-exempt - Enter Time on Timesheet

Grad Student - Enter Time on Timesheet

Student/Temp - Enter Time on Timesheet

Unclassified Exempt - Enter Time on Timesheet

Unclassified Hourly - Enter Time on Timesheet

Unclassified Non-exempt - Enter Time on Timesheet