Oops, it doesn't look like 'chains offering up free or discounted cups of joe for coffee day' is a national day..

Other days

Boba Day

Chocolate Milkshake Day

Bounce Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Frozen Yogurt Day

Cursing Day

Azonto Is Acceptable Day

Polyamory Day

Hiv Awareness Day

Martini Day