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

Other days

healing

Healing Day
ask out your crush

Ask Out Your Crush Day
boba

Boba Day
kale

Kale Day
one

One Day
cat girl

Cat Girl Day
china

China Day
kiss a brunette

Kiss A Brunette Day
hannah

Hannah Day
unicorn

Unicorn Day