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

Other days

kale

Kale Day
offer

Offer Day
reading

Reading Day
fiancee

Fiancee Day
believe

Believe Day
youth

Youth Day
hannah

Hannah Day
camera

Camera Day
bow tie

Bow Tie Day
tell ur crush you like them

Tell Ur Crush You Like Them Day