Oops, it doesn't look like 'park is a four to day' is a national day..

Other days

bow tie

Bow Tie Day
buddy

Buddy Day
mean girls

Mean Girls Day
cuddle up

Cuddle Up Day
cursing

Cursing Day
singles

Singles Day
first love

First Love Day
slime

Slime Day
tulip

Tulip Day
kiss a ginger

Kiss A Ginger Day