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

Other days

ride the wind

Ride The Wind Day
gum

Gum Day
boy friend

Boy Friend Day
frozen yogurt

Frozen Yogurt Day
me

Me Day
ask out your crush

Ask Out Your Crush Day
bounce

Bounce Day
gallery

Gallery Day
stud

Stud Day
ponytail

Ponytail Day