Oops, it doesn't look like 'look like shit at school day' is a national day..

Other days

fiancee

Fiancee Day
book

Book Day
slime

Slime Day
aloxolt

Aloxolt Day
lisp

Lisp Day
gum

Gum Day
camera

Camera Day
first love

First Love Day
kiss a ginger

Kiss A Ginger Day
hannah

Hannah Day