Opm Pay Period Calendar 2025. The following is compiled from information from the office of personnel management (opm). 20 rows a leave year ends on the day immediately before the first day of the first full biweekly pay period in the following calendar year.

The leave year always begins the first day of the first full pay period in the calendar year. A leave year ends on the day immediately before the first day of the first full biweekly pay.