Oops, it doesn't look like 'dirtbag day' is a national day..

Other days

Nail Polish Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Polyamory Day

Hoodie Day

Prosecco Day

Cat Girl Day

Appreciate Yaself A Lil Extra Day

Nae Nae Day

Tulip Day

Ormille Day