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

Other days

get funky

Get Funky Day
donate your hair

Donate Your Hair Day
stud

Stud Day
raise awerness of zeus

Raise Awerness Of Zeus Day
bounce

Bounce Day
prosecco

Prosecco Day
kale

Kale Day
brow

Brow Day
boy friend

Boy Friend Day
fiancee

Fiancee Day