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

Other days

ruby

Ruby Day
one

One Day
gum

Gum Day
artists

Artists Day
nail polish

Nail Polish Day
first love

First Love Day
mean girls

Mean Girls Day
lash

Lash Day
kiss a ginger

Kiss A Ginger Day
cuddle up

Cuddle Up Day