Oops, it doesn't look like 'Champs Yet Again day' is a national day..

Other days

martini

Martini Day
offer

Offer Day
gallery

Gallery Day
tulip

Tulip Day
mean girls

Mean Girls Day
boba

Boba Day
blanket fort

Blanket Fort Day
ride the wind

Ride The Wind Day
one

One Day
lisp

Lisp Day