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

Other days

hoodie

Hoodie Day
ask out your crush

Ask Out Your Crush Day
bow tie

Bow Tie Day
offer

Offer Day
pick me

Pick Me Day
fiancee

Fiancee Day
self care

Self Care Day
bounce

Bounce Day
girl friend

Girl Friend Day
cuddle up

Cuddle Up Day