Oops, it doesn't look like 'parks public lands day' is a national day..

Other days

frozen yogurt

Frozen Yogurt Day
ask out your crush

Ask Out Your Crush Day
buddy

Buddy Day
law

Law Day
self care

Self Care Day
nae nae

Nae Nae Day
coffee

Coffee Day
stud

Stud Day
artists

Artists Day
camera

Camera Day