What is the date that d day ended?

D-Day, the Allied invasion of Normandy during World War II, began on June 6, 1944. The operation was part of a larger campaign that continued for several weeks, with the Normandy campaign officially concluding around late August 1944. Therefore, while D-Day itself was one day, its effects and the subsequent battles lasted for months until the liberation of Paris on August 25, 1944.