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

Other days

stud

Stud Day
nail polish

Nail Polish Day
cat girl

Cat Girl Day
nae nae

Nae Nae Day
bow tie

Bow Tie Day
brow

Brow Day
fiancee

Fiancee Day
bubble bath

Bubble Bath Day
boy friend

Boy Friend Day
healing

Healing Day