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

Other days

ruby

Ruby Day
polyamory

Polyamory Day
bubble bath

Bubble Bath Day
slime

Slime Day
buddy

Buddy Day
bow tie

Bow Tie Day
bonang

Bonang Day
cuddle up

Cuddle Up Day
hoodie

Hoodie Day
pampering

Pampering Day