Oops, it doesn't look like 'no buying day' is a national day..

Other days

hannah

Hannah Day
bow tie

Bow Tie Day
bubble bath

Bubble Bath Day
cursing

Cursing Day
hoodie

Hoodie Day
latina equal pay

Latina Equal Pay Day
fiancee

Fiancee Day
eat what you want

Eat What You Want Day
camera

Camera Day
lisp

Lisp Day