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

Other days

kiss a brunette

Kiss A Brunette Day
kiss a ginger

Kiss A Ginger Day
bow tie

Bow Tie Day
camera

Camera Day
kale

Kale Day
cuddle up

Cuddle Up Day
lash

Lash Day
get funky

Get Funky Day
law

Law Day
slime

Slime Day