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

Other days

law

Law Day
lumpy rug

Lumpy Rug Day
pick me

Pick Me Day
cuddle up

Cuddle Up Day
one

One Day
boba

Boba Day
fiancee

Fiancee Day
kale

Kale Day
first love

First Love Day
carpenters

Carpenters Day