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

Other days

gum

Gum Day
carpenters

Carpenters Day
promposal

Promposal Day
cuddle up

Cuddle Up Day
nae nae

Nae Nae Day
lisp

Lisp Day
camera

Camera Day
slime

Slime Day
ruby

Ruby Day
raise awerness of zeus

Raise Awerness Of Zeus Day