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

Other days

lisp

Lisp Day
book

Book Day
boy friend

Boy Friend Day
girl friend

Girl Friend Day
artists

Artists Day
azonto is acceptable

Azonto Is Acceptable Day
slime

Slime Day
boba

Boba Day
lumpy rug

Lumpy Rug Day
brow

Brow Day