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

Other days

pumpkin

Pumpkin Day
kiss a ginger

Kiss A Ginger Day
bubble bath

Bubble Bath Day
kiss a brunette

Kiss A Brunette Day
hoodie

Hoodie Day
believe

Believe Day
coffee

Coffee Day
bounce

Bounce Day
comfy

Comfy Day
kale

Kale Day