Oops, it doesn't look like 'museum of african american history and culture one day' is a national day..

Other days

carpenters

Carpenters Day

one

One Day

ponytail

Ponytail Day

mean girls

Mean Girls Day

promposal

Promposal Day

self care

Self Care Day

hiv awareness

Hiv Awareness Day

Me Day

martini

Martini Day

tell ur crush you like them

Tell Ur Crush You Like Them Day