Oops, it doesn't look like 'best friend post a picture with people you hung out with once day' is a national day..

Other days

Azonto Is Acceptable Day

Carpenters Day

Boyfriend Day

Pick Me Day

Ride The Wind Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Healing Day

Hoodie Day

Frozen Yogurt Day

Prescription Drug Take Back Day