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

Other days

bow tie

Bow Tie Day
hot chocolate

Hot Chocolate Day
pick me

Pick Me Day
stud

Stud Day
healing

Healing Day
fiancee

Fiancee Day
cuddle up

Cuddle Up Day
self care

Self Care Day
bounce

Bounce Day
coffee

Coffee Day