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

Other days

cursing

Cursing Day
kale

Kale Day
latina equal pay

Latina Equal Pay Day
girl friend

Girl Friend Day
eat what you want

Eat What You Want Day
gum

Gum Day
ponytail

Ponytail Day
nail polish

Nail Polish Day
self care

Self Care Day
ruby

Ruby Day