Oops, it doesn't look like 'sprint car series is coming back to knoxville raceway on day' is a national day..

Other days

Slime Day

Martini Day

Cat Girl Day

Frozen Yogurt Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Donate Your Hair Day

Latina Equal Pay Day

Kiss A Ginger Day

Polyamory Day

Promposal Day