Oops, it doesn't look like 'bike to my nuts day' is a national day..

Other days

law

Law Day
tell a fairytale

Tell A Fairytale Day
slime

Slime Day
ormille

Ormille Day
cat girl

Cat Girl Day
china

China Day
lash

Lash Day
unicorn

Unicorn Day
cuddle up

Cuddle Up Day
one

One Day