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

Other days

brow

Brow Day
first love

First Love Day
raise awerness of zeus

Raise Awerness Of Zeus Day
nail polish

Nail Polish Day
prosecco

Prosecco Day
china

China Day
lisp

Lisp Day
kale

Kale Day
cuddle up

Cuddle Up Day
bubble bath

Bubble Bath Day