Why the Sixth or When Would Mother Nature Permit the Long-Planned Operation Overlord?

 British RAF Captain James Martin Stagg advised General Eisenhower to delay the invasion  one day until June 6th, 1944 as the Imperial War Museum's chart below illustrates. Favorable tides and moonlight also had to be coordinated.

D-Day Invasion Beaches' Numbers

The informative and timely chart below was provided by the Imperial War Museum in its free D-Day newspaper.

World War II veterans, Walter Tymczuk, Max Kolpas and Matthew Wojtaszek participated in the Normandy invasion and contributed an oral memoir to the Veterans History Project at the Niles-Maine District Library.