H-Hour (D-Day) Explained

H-Hour (redundant acronym of hour) was the name given to the beginning of the amphibious assault during the Normandy landings of World War II. H-Hour occurred at 6:30 a.m. local time on June 6, 1944.^[1]

Notes and References

1. News: Moon . Kat . What Does the 'D' in 'D-Day' Stand For? Experts Disagree With Eisenhower's Answer . 5 May 2021 . Time Magazine . June 4, 2019.