Oops, it doesn't look like 'football team for one day' is a national day..

Other days

carpenters

Carpenters Day
buddy

Buddy Day
camera

Camera Day
kale

Kale Day
one

One Day
tulip

Tulip Day
blanket fort

Blanket Fort Day
ride the wind

Ride The Wind Day
bow tie

Bow Tie Day
believe

Believe Day