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Museums extend their hours on certain dates as noted on the calendar below.
NASM (National Air and Space Museum) 7:30 p.m.
NMAH (National Museum of American History) 7:30 p.m.
NMNH (National Museum of Natural History Museum) 7:30 p.m.
UHC (National Air and Space Museum Udvar-Hazy Center) 6:30 p.m.