Oops, it doesn't look like 'Boolean Appreciation day' is a national day..

Other days

youth

Youth Day
gum

Gum Day
gallery

Gallery Day
get funky

Get Funky Day
kiss a brunette

Kiss A Brunette Day
kiss a ginger

Kiss A Ginger Day
hoodie

Hoodie Day
kale

Kale Day
law

Law Day
pampering

Pampering Day