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

Other days

boba

Boba Day
nae nae

Nae Nae Day
prosecco

Prosecco Day
pick me

Pick Me Day
cuddle up

Cuddle Up Day
bow tie

Bow Tie Day
hannah

Hannah Day
fiancee

Fiancee Day
one

One Day
kiss a ginger

Kiss A Ginger Day