Oops, it doesn't look like 'register of historic places is emptied and refilled each day' is a national day..

Other days

Hot Chocolate Day

Embarrass Your Best Friend Day

Ask Out Your Crush Day

Prescription Drug Take Back Day

Lost Sock Memorial Day

Ride The Wind Day

Promposal Day

Martini Day

Gum Day

African Immigrant And Refugee Hiv And Hep Awareness Day