Oops, it doesn't look like 'screw it i am eating more cheese than strictly advisable day' is a national day..

Other days

Chocolate Milkshake Day

Prescription Drug Take Back Day

Reading Day

Raise Awerness Of Zeus Day

Appreciate Yaself A Lil Extra Day

Healing Day

Nail Polish Day

Pampering Day

Buddy Day

Frozen Yogurt Day