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

Other days

kale

Kale Day
tulip

Tulip Day
girl friend

Girl Friend Day
ormille

Ormille Day
self care

Self Care Day
donate your hair

Donate Your Hair Day
ride the wind

Ride The Wind Day
martini

Martini Day
hot chocolate

Hot Chocolate Day
camera

Camera Day