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

Other days

ruby

Ruby Day
bow tie

Bow Tie Day
tell a fairytale

Tell A Fairytale Day
comfy

Comfy Day
pick me

Pick Me Day
hoodie

Hoodie Day
one

One Day
lumpy rug

Lumpy Rug Day
kiss a brunette

Kiss A Brunette Day
reading

Reading Day