Mountain Standard Time. Almost all of Arizona is on the same time zone, Mountain Standard Time (MST), all year. The time zone has a UTC offset of minus 7 hours (UTC-7). It is also known as Mountain Time, but that term refers both to standard time and the time zone which is elsewhere used during DST: Mountain Daylight Time (MDT).
The museum is closed on these holidays: New Yearâs Day, July 4, Thanksgiving, and Christmas. Please note that the museum's grounds are open 7 a.m. to 7 p.m. during Daylight Saving Time, and 7 a.m. to 6 p.m. during Standard Time. McNay Art Museum Admission Prices.
Please visit Smithsonian visitor maps for directions to the National Museum of African American History and Culture, Washington Monument and National Mall. The Museum is open 7-days a week, 364 days a year. Our regular operating hours are from 10:00 a.m. - 5:30 p.m. The Museum is closed on December 25.