Oops, it doesn't look like 'ban anime day' is a national day..

Other days

first love

First Love Day
hoodie

Hoodie Day
lisp

Lisp Day
self care

Self Care Day
hannah

Hannah Day
coffee

Coffee Day
blanket fort

Blanket Fort Day
kiss a ginger

Kiss A Ginger Day
get funky

Get Funky Day
brow

Brow Day