Oops, it doesn't look like 'convention starts like day' is a national day..

Other days

African Immigrant And Refugee Hiv And Hep Awareness Day

Stress Awareness Day

Gum Day

Tell A Fairytale Day

Prescription Drug Take Back Day

Mean Girls Day

Kale Day

Ride The Wind Day

Slime Day

Appreciate Yaself A Lil Extra Day