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

Other days

hannah

Hannah Day
frozen yogurt

Frozen Yogurt Day
pumpkin

Pumpkin Day
cat girl

Cat Girl Day
first love

First Love Day
hoodie

Hoodie Day
ride the wind

Ride The Wind Day
ormille

Ormille Day
tulip

Tulip Day
prosecco

Prosecco Day