Oops, it doesn't look like 'historic park one of the best places to spend a day' is a national day..

Other days

Nae Nae Day

China Day

Polyamory Day

Carpenters Day

Prescription Drug Take Back Day

Tell Ur Crush You Like Them Day

Ponytail Day

Ride The Wind Day

Embarrass Your Best Friend Day

Chocolate Milkshake Day