Oops, it doesn't look like 'park service says the president drank up to a gallon of coffee every single day' is a national day..

Other days

Lisp Day

Ask Out Your Crush Day

Ride The Wind Day

Fiancee Day

Embarrass Your Best Friend Day

Bubble Bath Day

Prescription Drug Take Back Day

Boba Day

Appreciate Yaself A Lil Extra Day

Cursing Day