Oops, it doesn't look like 'park was forced to delete factual tweets about the environment cause they made the president mad happy day' is a national day..

Other days

Emoji Day

Lost Sock Memorial Day

Kiss A Brunette Day

Pampering Day

Chocolate Milkshake Day

Lisp Day

Self Appreciation Day

Hot Chocolate Day

Frozen Yogurt Day

Tell Ur Crush You Like Them Day