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

Other days

law

Law Day
cuddle up

Cuddle Up Day
slime

Slime Day
bow tie

Bow Tie Day
azonto is acceptable

Azonto Is Acceptable Day
self appreciation

Self Appreciation Day
gum

Gum Day
pampering

Pampering Day
ormille

Ormille Day
cursing

Cursing Day