GRAND CANYON — Monday is Martin Luther King, Jr. day and marks the first free entrance day to all of the National Parks. This includes the Grand Canyon and the Petrified Forest.

The Amateur Radio Relay League is conducting a year-long event in honor of the 100th anniversary of the National Park System. While you are there, you can get a demonstration of the capability of amateur, or ham, radio today.

Other free entrance days in 2016 include

• January 18 (Martin Luther King, Jr. Day)
• April 16-24 (National Park Week)
• August 25 through 28 (National Park Service Birthday)
• September 24 (National Public Lands Day)
• November 11 (Veterans Day)

Other fees such as reservation, camping, lodging, tours, concession and fees collected by third parties are not included unless stated otherwise.