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

Other days

offer

Offer Day
hot chocolate

Hot Chocolate Day
blanket fort

Blanket Fort Day
cursing

Cursing Day
boba

Boba Day
healing

Healing Day
eat what you want

Eat What You Want Day
prosecco

Prosecco Day
kale

Kale Day
bow tie

Bow Tie Day