Oops, it doesn't look like 'stop being so negative day' is a national day..

Other days

Ponytail Day

Chocolate Milkshake Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Offer Day

Azonto Is Acceptable Day

Kiss A Brunette Day

Boyfriend Day

Raise Awerness Of Zeus Day

My Little Pony Day

Latina Equal Pay Day