Oops, it doesn't look like 'shut da fuck up day' is a national day..

Other days

bow tie

Bow Tie Day
cuddle up

Cuddle Up Day
fiancee

Fiancee Day
self care

Self Care Day
cat girl

Cat Girl Day
lumpy rug

Lumpy Rug Day
lash

Lash Day
camera

Camera Day
kiss a brunette

Kiss A Brunette Day
offer

Offer Day