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

Other days

ruby

Ruby Day
lisp

Lisp Day
artists

Artists Day
kale

Kale Day
ride the wind

Ride The Wind Day
hiv awareness

Hiv Awareness Day
slime

Slime Day
me

Me Day
cuddle up

Cuddle Up Day
stud

Stud Day