Oops, it doesn't look like 'jump off a bridge day' is a national day..

Other days

stud

Stud Day
ride the wind

Ride The Wind Day
first love

First Love Day
pampering

Pampering Day
china

China Day
lash

Lash Day
gum

Gum Day
slime

Slime Day
gallery

Gallery Day
pick me

Pick Me Day