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

Other days

self appreciation

Self Appreciation Day
mean girls

Mean Girls Day
comfy

Comfy Day
bounce

Bounce Day
gallery

Gallery Day
coffee

Coffee Day
eat what you want

Eat What You Want Day
aloxolt

Aloxolt Day
bow tie

Bow Tie Day
brow

Brow Day