The Memorial grounds are accessible 24 hours a day, 365 days a year. Rangers are on-site daily except Thanksgiving, Christmas, and New Year's Day.
Hours of Operation:
- Summer Hours - From Sunday March 13, 2011 to Saturday, November 5, 2011, rangers will be on site from 9:00 a.m. to 5:30 p.m.
- Summer Evening Hours - Rangers will be available from 9:00 a.m. to 10:00 p.m. Thursdays through Sundays beginning Thursday, May 26, 2011. Evening hours will end for this season on Sunday, September 4, 2011.
- Winter Hours - Beginning Sunday, November 6, 2011 through Saturday, March 10, 2012 rangers will be on site from 8:30 a.m. to 5:00 p.m.
The Oklahoma City National Memorial Museum is open 7 days a week 9:00 a.m. to 6:00 p.m. Monday through Saturday and 12:00 p.m. to 6:00 p.m. on Sunday with ticket sales ending one hour prior to closing each day.