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

Other days

stud

Stud Day
offer

Offer Day
ormille

Ormille Day
healing

Healing Day
unicorn

Unicorn Day
cat girl

Cat Girl Day
bow tie

Bow Tie Day
pick me

Pick Me Day
ask out your crush

Ask Out Your Crush Day
comfy

Comfy Day