Oops, it doesn't look like 'championship challenge grows on final day' is a national day..

Other days

blanket fort

Blanket Fort Day
gallery

Gallery Day
hoodie

Hoodie Day
hiv awareness

Hiv Awareness Day
lisp

Lisp Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
camera

Camera Day
ponytail

Ponytail Day
special education

Special Education Day
self appreciation

Self Appreciation Day