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

Hoodie Day

Self Appreciation Day

Frozen Yogurt Day

My Little Pony Day

Appreciate Yaself A Lil Extra Day

Slime Day

Gum Day

Prescription Drug Take Back Day

Comfy Day

Get Funky Day