Generally not peak times are DL 9 or 10am to 8 (rarely but does happen 9 or 10) pm weekdays. DCA 10am to 6pm. Weekends (Fri, Sat Sun) DL 9 or 10 am to 11 (sometimes 10 and sometimes midnight, but usually 11) DCA 10-8 (sometimes 9 and rarely but it does happen 10 (probably only on a holdiay weekend though)