Oops, it doesn't look like 'be a piece of shit day' is a national day..

Other days

camera

Camera Day
polyamory

Polyamory Day
lash

Lash Day
boba

Boba Day
blanket fort

Blanket Fort Day
ruby

Ruby Day
me

Me Day
gum

Gum Day
bow tie

Bow Tie Day
lumpy rug

Lumpy Rug Day