06 OCT 2026History
What time did D-Day start? 6 June 1944, H-Hour at 06:30
The first Normandy beach landings began at H-Hour, 06:30 local time on 6 June 1944. Airborne operations had started several hours earlier.
Short answer: The first seaborne landings on D-Day began at H-Hour, 06:30 local time in Normandy on 6 June 1944. Under the wartime summer clock then used in Normandy, that was 04:30 UTC. Airborne operations had begun several hours earlier, so D-Day does not have one uncontested “start” time.
The answer depends on what “start” means
D-Day was not a single event at a single location. It was a combined airborne, naval and amphibious operation across a wide area. The familiar time 06:30 refers to H-Hour for the first American beach assaults at Utah and Omaha. Landings on the British and Canadian beaches followed later because tides and coastal conditions differed.
If “D-Day started” means the first Allied airborne operations over Normandy, the answer belongs shortly after midnight. If it means the first major landing craft reaching the invasion beaches, 06:30 is the accepted answer.
That distinction is more useful than forcing the entire operation into one minute.
What H-Hour meant
Military plans use D-Day for the day an operation begins and H-Hour for a designated starting hour. On 6 June, H-Hour coordinated landing craft, naval fire, obstacles, tides and supporting forces.
At Utah and Omaha, H-Hour was 06:30. The British landing at Gold began around 07:25, the Canadians at Juno around 07:35, and the British at Sword around 07:25. Conditions at each beach shaped the schedule.
The airborne phase was already under way. Pathfinders and paratroopers entered Normandy during the early hours, tasked with securing bridges, exits and other positions before the beach assaults.
Local time and UTC
- Date in Normandy: 6 June 1944
- First American beach H-Hour: 06:30 local wartime summer time
- UTC: 04:30 UTC
- Airborne operations: began after midnight, before H-Hour
Time-zone labels for occupied France can be confusing. Civil clocks in Normandy followed the German-imposed Central European summer schedule, two hours ahead of UTC. British operational records also used a double-summer clock aligned to that offset. This is why simply assuming modern French standard time can produce the wrong conversion.
Why some sources give 05:30 UTC
Some retellings subtract only one hour from 06:30. That treats the local clock as UTC+1. For 6 June 1944, the civil and operational summer clock used for the landings was two hours ahead of UTC. The 06:30 beach time therefore corresponds to 04:30 UTC.
Historical military records may also state times in the clock system used by a particular command. A careful account should identify both the event and the clock before converting it.
The scale behind one minute
More than 150,000 Allied troops reached Normandy by sea and air on D-Day. The landings opened the campaign that established an Allied foothold in Western Europe. Thousands of people were killed, wounded or reported missing during the operation.
The minute 06:30 is a planning marker within that larger history. It is not the moment at which every beach, aircraft and ship acted at once.