Oops, it doesn't look like 'junior high rodeo finals field day' is a national day..

Other days

fiancee

Fiancee Day
prosecco

Prosecco Day
cuddle up

Cuddle Up Day
lisp

Lisp Day
ruby

Ruby Day
hannah

Hannah Day
kale

Kale Day
youth

Youth Day
cat girl

Cat Girl Day
brow

Brow Day