Oops, it doesn't look like 'public lands parks have no entrance fees day' is a national day..

Other days

Singles Day

Raise Awerness Of Zeus Day

China Day

Ponytail Day

Lumpy Rug Day

Get Funky Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Kale Day

Appreciate Yaself A Lil Extra Day

Bow Tie Day