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

Other days

hoodie

Hoodie Day
kiss a brunette

Kiss A Brunette Day
ormille

Ormille Day
first love

First Love Day
coffee

Coffee Day
comfy

Comfy Day
bounce

Bounce Day
artists

Artists Day
get funky

Get Funky Day
self care

Self Care Day