Oops, it doesn't look like 'black mamba day' is a national day..

Other days

Lost Sock Memorial Day

Stress Awareness Day

Bonang Day

Nae Nae Day

Embarrass Your Best Friend Day

Girl Friend Day

Raise Awerness Of Zeus Day

Cuddle Up Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Promposal Day