 To add to the general confusion, Gomm's watch seems to have been set an hour ahead of everyone else's, or else he misremembered the time when debriefing.Gomm said the time was about 02.40, but Slee's crew and the Swiss people watching from across the lake made it 01.40, Double British Summer Time and West European Summer Time being the same.The main force began bombing, the Pathfinders circling back over the lake to re-illuminate and re-mark the target.