When a baby is born, the arrival date is an historical fact that is seldom subject to interpretation. But when the baby is a brand-new town planned and built by the federal government, determining the date of birth becomes a philosophical question. W h e n i s G r e e n b e l t ’ s birthday? June 1 is the date that has traditionally been celebrated as the anniversary of Greenbelt’s founding. That’s the effective date of the charter approved by the Maryland General Assembly, incorporating Greenbelt as a town in 1937. For that reason, June 1 originally was called Charter Day in Greenbelt. For more on this story, click here.