Oops, it doesn't look like 'realize just how single and worthless you actually are day' is a national day..

Other days

Chocolate Milkshake Day

Appreciate Yaself A Lil Extra Day

Tell Ur Crush You Like Them Day

Lash Day

Stress Awareness Day

Coffee Day

Prescription Drug Take Back Day

Lost Sock Memorial Day

Bow Tie Day

Cat Girl Day