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

Other days

kale

Kale Day
cuddle up

Cuddle Up Day
offer

Offer Day
martini

Martini Day
cat girl

Cat Girl Day
azonto is acceptable

Azonto Is Acceptable Day
kiss a ginger

Kiss A Ginger Day
polyamory

Polyamory Day
comfy

Comfy Day
buddy

Buddy Day