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

Other days

camera

Camera Day
stress awareness

Stress Awareness Day
nail polish

Nail Polish Day
get funky

Get Funky Day
aloxolt

Aloxolt Day
tulip

Tulip Day
cat girl

Cat Girl Day
book

Book Day
eat what you want

Eat What You Want Day
kale

Kale Day