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

Other days

pumpkin

Pumpkin Day
bounce

Bounce Day
bow tie

Bow Tie Day
first love

First Love Day
bubble bath

Bubble Bath Day
lumpy rug

Lumpy Rug Day
buddy

Buddy Day
kale

Kale Day
stud

Stud Day
kiss a brunette

Kiss A Brunette Day