Oops, it doesn't look like 'bring back excessive party promo day' is a national day..

Other days

fiancee

Fiancee Day
eat what you want

Eat What You Want Day
ride the wind

Ride The Wind Day
offer

Offer Day
nae nae

Nae Nae Day
boy friend

Boy Friend Day
bounce

Bounce Day
gum

Gum Day
bow tie

Bow Tie Day
raise awerness of zeus

Raise Awerness Of Zeus Day