Oops, it doesn't look like 'run up the flagpole and see if anybody salutes it day' is a national day..

Other days

Prescription Drug Take Back Day

Donate Your Hair Day

Ormille Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Bubble Bath Day

Unicorn Day

Slime Day

Kiss A Brunette Day

Hiv Awareness Day

Lash Day