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

Other days

first love

First Love Day
comfy

Comfy Day
polyamory

Polyamory Day
kiss a brunette

Kiss A Brunette Day
coffee

Coffee Day
martini

Martini Day
fiancee

Fiancee Day
self appreciation

Self Appreciation Day
stud

Stud Day
nae nae

Nae Nae Day