Oops, it doesn't look like 'fuckbeast day' is a national day..

Other days

one

One Day
mean girls

Mean Girls Day
bounce

Bounce Day
unicorn

Unicorn Day
self care

Self Care Day
donate your hair

Donate Your Hair Day
slime

Slime Day
cuddle up

Cuddle Up Day
hannah

Hannah Day
kiss a brunette

Kiss A Brunette Day