Oops, it doesn't look like 'then topped off by a winner at the end of the day' is a national day..

Other days

Coffee Day

Promposal Day

Kiss A Brunette Day

Ponytail Day

Bow Tie Day

Camera Day

Pampering Day

Prescription Drug Take Back Day

Get Funky Day

African Immigrant And Refugee Hiv And Hep Awareness Day