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

Other days

prosecco

Prosecco Day
lash

Lash Day
comfy

Comfy Day
offer

Offer Day
lumpy rug

Lumpy Rug Day
frozen yogurt

Frozen Yogurt Day
believe

Believe Day
nae nae

Nae Nae Day
mean girls

Mean Girls Day
ruby

Ruby Day