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

Other days

bow tie

Bow Tie Day
stress awareness

Stress Awareness Day
coffee

Coffee Day
bounce

Bounce Day
ride the wind

Ride The Wind Day
offer

Offer Day
ruby

Ruby Day
chocolate milkshake

Chocolate Milkshake Day
aloxolt

Aloxolt Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day