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

Other days

hiv awareness

Hiv Awareness Day
pampering

Pampering Day
ponytail

Ponytail Day
stress awareness

Stress Awareness Day
fiancee

Fiancee Day
buddy

Buddy Day
lumpy rug

Lumpy Rug Day
kale

Kale Day
lisp

Lisp Day
hoodie

Hoodie Day