Hours of Operation Walk-in hours vary and are conditional on how many appointments we have. Please call for availability. HOURS Walk-Ins require an allocated appointment time Walk-in hours vary and are conditional on how many appointments we have. Please call for availability. MONDAY - THURSDAY 9:00am - 4:00pm FRIDAY 9:00am - 2:00pm SATURDAY 9:00am - 2:00pm SUNDAY and HOLIDAYS: Closed Langdon Medical will be closed as a long weekend for all holidays