public static void CreateTimerJob(SPSite site) { var timerJob = new CleanupTJ(site); timerJob.Schedule = new SPWeeklySchedule { BeginDayOfWeek = System.DayOfWeek.Saturday, EndDayOfWeek = System.DayOfWeek.Saturday, BeginHour = 0, EndHour = 1 }; timerJob.Update(); }