Oops, it doesn't look like 'cemetery for flyover to commemorate day' is a national day..

Other days

Lumpy Rug Day

Frozen Yogurt Day

Boyfriend Day

Tell Ur Crush You Like Them Day

Slime Day

Pick Me Day

Ask Out Your Crush Day

Blanket Fort Day

Kiss A Ginger Day

African Immigrant And Refugee Hiv And Hep Awareness Day