Oops, it doesn't look like 'sports stadium on day' is a national day..

Other days

carpenters

Carpenters Day
ormille

Ormille Day
bubble bath

Bubble Bath Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
blanket fort

Blanket Fort Day
boy friend

Boy Friend Day
kiss a ginger

Kiss A Ginger Day
gum

Gum Day
hiv awareness

Hiv Awareness Day
azonto is acceptable

Azonto Is Acceptable Day