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

Other days

prosecco

Prosecco Day
bow tie

Bow Tie Day
boba

Boba Day
stud

Stud Day
boy friend

Boy Friend Day
one

One Day
lash

Lash Day
self care

Self Care Day
eat what you want

Eat What You Want Day
girl friend

Girl Friend Day