Oops, it doesn't look like 'piss water beer and shitty caucasian bbq day' is a national day..

Other days

fiancee

Fiancee Day
bow tie

Bow Tie Day
ponytail

Ponytail Day
stud

Stud Day
gum

Gum Day
ormille

Ormille Day
prescription drug take back

Prescription Drug Take Back Day
one

One Day
self care

Self Care Day
self appreciation

Self Appreciation Day