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

Other days

pumpkin

Pumpkin Day
gallery

Gallery Day
ponytail

Ponytail Day
raise awerness of zeus

Raise Awerness Of Zeus Day
my little pony

My Little Pony Day
lisp

Lisp Day
unicorn

Unicorn Day
bow tie

Bow Tie Day
pick me

Pick Me Day
buddy

Buddy Day