Oops, it doesn't look like 'lead drops over half a point in one day' is a national day..

Other days

Azonto Is Acceptable Day

Slime Day

Offer Day

Book Day

Boyfriend Day

Tell Ur Crush You Like Them Day

Bow Tie Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Blanket Fort Day

Pumpkin Day