Oops, it doesn't look like 'i am jazz day' is a national day..

Other days

my little pony

My Little Pony Day
cuddle up

Cuddle Up Day
eat what you want

Eat What You Want Day
pumpkin

Pumpkin Day
brow

Brow Day
bow tie

Bow Tie Day
gum

Gum Day
lash

Lash Day
lisp

Lisp Day
girl friend

Girl Friend Day