I don't know the exact time or even exactly where (probably Sword beach). But my Granddad in the Royal Navy and was part of a crew for a landing craft/ part of a beach group. So as the story goes he was in a landing craft performing his regular duties when one of his friends got his attention to some army guy being transported to the beach who was in a nearby landing craft who was trying to get his attention. It turns out this was his brother who had been in Africa for the past 3 years. When they met on the beach this would be the last time they would see each other for another 3 years since my grandad got a posting to India later that year and wouldn't even get back to Britain till 1946 where he was then posted to Scotland.