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

Other days

aloxolt

Aloxolt Day
hannah

Hannah Day
believe

Believe Day
ormille

Ormille Day
pumpkin

Pumpkin Day
martini

Martini Day
nae nae

Nae Nae Day
kiss a brunette

Kiss A Brunette Day
brow

Brow Day
youth

Youth Day