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

Other days

kale

Kale Day
comfy

Comfy Day
law

Law Day
cuddle up

Cuddle Up Day
stress awareness

Stress Awareness Day
gum

Gum Day
fiancee

Fiancee Day
cat girl

Cat Girl Day
brow

Brow Day
tulip

Tulip Day