The CU Museum of Natural History will be closed on the following days as officially-observed campus holidays: 

New Year's Day (January 1), Martin Luther King Jr. Day (January 20), Friday of Spring Break (March 28), Memorial Day (May 26), Juneteenth Holiday (June 19), Independence Day (July 4), Labor Day (September 1), Thanksgiving Day and Day after Thanksgiving (November 27 & 28), Christmas Eve and Christmas Day (December 25 & 26).