Oops, it doesn't look like 'proper idiots day' is a national day..

Other days

law

Law Day
hannah

Hannah Day
kiss a ginger

Kiss A Ginger Day
cuddle up

Cuddle Up Day
stud

Stud Day
carpenters

Carpenters Day
bow tie

Bow Tie Day
brow

Brow Day
kiss a brunette

Kiss A Brunette Day
me

Me Day