Oops, it doesn't look like 'stay in pjs day' is a national day..

Other days

believe

Believe Day
get funky

Get Funky Day
camera

Camera Day
lisp

Lisp Day
gum

Gum Day
cuddle up

Cuddle Up Day
china

China Day
donate your hair

Donate Your Hair Day
lost sock memorial

Lost Sock Memorial Day
bow tie

Bow Tie Day