Oops, it doesn't look like 'black veil brides day' is a national day..

Other days

lisp

Lisp Day
china

China Day
hiv awareness

Hiv Awareness Day
youth

Youth Day
fiancee

Fiancee Day
kiss a brunette

Kiss A Brunette Day
bow tie

Bow Tie Day
gum

Gum Day
girl friend

Girl Friend Day
one

One Day