Oops, it doesn't look like 'Everybody Hoop In Shaqs day' is a national day..

Other days

Unicorn Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Kiss A Ginger Day

Chocolate Milkshake Day

Ponytail Day

Slime Day

Gum Day

Buddy Day

Blanket Fort Day

Ormille Day