Oops, it doesn't look like 'watch march madness instead of doing schoolwork day' is a national day..

Other days

Self Appreciation Day

Ormille Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Kale Day

Hannah Day

Cursing Day

Bubble Bath Day

Chocolate Milkshake Day

Fiancee Day

Embarrass Your Best Friend Day