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

Other days

lash

Lash Day
stud

Stud Day
carpenters

Carpenters Day
fiancee

Fiancee Day
kiss a ginger

Kiss A Ginger Day
kiss a brunette

Kiss A Brunette Day
cuddle up

Cuddle Up Day
gum

Gum Day
cursing

Cursing Day
frozen yogurt

Frozen Yogurt Day