Oops, it doesn't look like 'stadium close the rooftop that day' is a national day..

Other days

Ponytail Day

Believe Day

Kiss A Brunette Day

Stud Day

Comfy Day

Tell A Fairytale Day

Kale Day

Carpenters Day

Chocolate Milkshake Day

African Immigrant And Refugee Hiv And Hep Awareness Day