Open All Year
The Visitor Center is open daily from 9:00 a.m. to 5:00 p.m.
Park Grounds are open daylight hours.
Phone (301) 432-5124
Closed Thanksgiving, Christmas, and New Years Day
Memorial Day Commemoration (Monday of Memorial Day Weekend at the National Cemetery)
Independence Day Commemoration (First Saturday in July)
Anniversary of the Battle of Antietam (Sharpsburg), September 17
The Memorial Illumination (First Saturday in December)