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

Other days

bow tie

Bow Tie Day
promposal

Promposal Day
hoodie

Hoodie Day
kale

Kale Day
cuddle up

Cuddle Up Day
martini

Martini Day
believe

Believe Day
ruby

Ruby Day
pick me

Pick Me Day
kiss a brunette

Kiss A Brunette Day