Oops, it doesn't look like 'post your plate day' is a national day..

Other days

gum

Gum Day
emoji

Emoji Day
kiss a ginger

Kiss A Ginger Day
first love

First Love Day
bow tie

Bow Tie Day
frozen yogurt

Frozen Yogurt Day
one

One Day
lisp

Lisp Day
self care

Self Care Day
blanket fort

Blanket Fort Day