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

Other days

stud

Stud Day
hoodie

Hoodie Day
gum

Gum Day
brow

Brow Day
ruby

Ruby Day
boyfriend

Boyfriend Day
lumpy rug

Lumpy Rug Day
donate your hair

Donate Your Hair Day
ride the wind

Ride The Wind Day
boy friend

Boy Friend Day