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

Other days

mean girls

Mean Girls Day
unicorn

Unicorn Day
gum

Gum Day
stress awareness

Stress Awareness Day
nail polish

Nail Polish Day
law

Law Day
hiv awareness

Hiv Awareness Day
comfy

Comfy Day
tulip

Tulip Day
reading

Reading Day