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

Other days

hoodie

Hoodie Day
first love

First Love Day
eat what you want

Eat What You Want Day
ruby

Ruby Day
bounce

Bounce Day
stress awareness

Stress Awareness Day
mean girls

Mean Girls Day
get funky

Get Funky Day
comfy

Comfy Day
china

China Day