Oops, it doesn't look like 'wwii museum solemnly joins with the entire world in commemorating international holocaust remembrance day' is a national day..

Other days

Aloxolt Day

Girl Friend Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Stress Awareness Day

Tell A Fairytale Day

Bubble Bath Day

Get Funky Day

Ruby Day

Polyamory Day

Ponytail Day