Oops, it doesn't look like 'flag burned by antifa leftists a day' is a national day..

Other days

Chocolate Milkshake Day

Eat What You Want Day

Singles Day

Prosecco Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Lost Sock Memorial Day

China Day

Ask Out Your Crush Day

Stud Day

Kiss A Ginger Day