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

Other days

youth

Youth Day
bounce

Bounce Day
bow tie

Bow Tie Day
slime

Slime Day
ormille

Ormille Day
polyamory

Polyamory Day
believe

Believe Day
get funky

Get Funky Day
raise awerness of zeus

Raise Awerness Of Zeus Day
gum

Gum Day