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

Other days

bubble bath

Bubble Bath Day
ormille

Ormille Day
kiss a ginger

Kiss A Ginger Day
artists

Artists Day
healing

Healing Day
ruby

Ruby Day
camera

Camera Day
ride the wind

Ride The Wind Day
lumpy rug

Lumpy Rug Day
kale

Kale Day