Oops, it doesn't look like 'My Stomach Hurts So Bad I Ate Too Much Ice Cream day' is a national day..

Other days

Donate Your Hair Day

Stud Day

Boba Day

Believe Day

Raise Awerness Of Zeus Day

Prescription Drug Take Back Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Me Day

Prosecco Day

My Little Pony Day