January 18: Birthday of Martin Luther King, Jr.- April 17: First day of National Park Week
- August 4: One year anniversary of the Great American Outdoors Act
- August 25: National Park Service Birthday
- September 25: National Public Lands Day
- November 11: Veterans Day
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Free Entrance Days in the National Parks
National Park Service - On six days in 2021, all National Park Service sites that charge an entrance fee will offer free admission to everyone. Mark your calendar for these entrance fee–free dates in 2021: