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

Other days

believe

Believe Day
kiss a ginger

Kiss A Ginger Day
singles

Singles Day
ask out your crush

Ask Out Your Crush Day
first love

First Love Day
gum

Gum Day
polyamory

Polyamory Day
lash

Lash Day
camera

Camera Day
brow

Brow Day