As of Date 

Employee data is entered and maintained as of a specific schedule week. If you are not at the schedule week for which you want to enter or view employee data when working at any Employee Maintenance page, enter the new date, scroll to that week or select the week from the calendar pop-up and click Go.

The date displayed in the Week of field is the starting day for the schedule week even if you select a different day of the week.

The As of date is not used for Time-off Requests.