Oops, it doesn't look like 'ChampionshipA Very Hard day' is a national day..

Other days

Polyamory Day

Stud Day

Me Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Embarrass Your Best Friend Day

Gum Day

Chocolate Milkshake Day

Tell Ur Crush You Like Them Day

Lumpy Rug Day

Book Day