Oops, it doesn't look like 'museum of the united states army opened on veterans day' is a national day..

Other days

Cuddle Up Day

Tell Ur Crush You Like Them Day

Coffee Day

Get Funky Day

Hoodie Day

Raise Awerness Of Zeus Day

Pick Me Day

Nae Nae Day

Law Day

African Immigrant And Refugee Hiv And Hep Awareness Day