Oops, it doesn't look like 'clean your lens day' is a national day..

Other days

law

Law Day
nae nae

Nae Nae Day
cuddle up

Cuddle Up Day
frozen yogurt

Frozen Yogurt Day
fiancee

Fiancee Day
singles

Singles Day
ormille

Ormille Day
camera

Camera Day
bow tie

Bow Tie Day
ride the wind

Ride The Wind Day