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

Other days

bow tie

Bow Tie Day
coffee

Coffee Day
cursing

Cursing Day
hiv awareness

Hiv Awareness Day
boy friend

Boy Friend Day
polyamory

Polyamory Day
gum

Gum Day
girl friend

Girl Friend Day
singles

Singles Day
kale

Kale Day