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

Other days

camera

Camera Day
get funky

Get Funky Day
comfy

Comfy Day
bow tie

Bow Tie Day
china

China Day
slime

Slime Day
stud

Stud Day
ride the wind

Ride The Wind Day
ormille

Ormille Day
tulip

Tulip Day