With my darling, almost every evening for a few months in 2012, we walked to the lake before returning to sleep. One evening, while we were on the way back (between the port of Neuchâtel and the car park of Jeunes-Rives), we saw 3 bright but soft lights that made a triangle shape. The object was above the red church of Neuchâtel about 500-1000m above it and was large in size. He was coming in our direction (from the red church, towards Yverdon). These three lights went out very slowly and came back on very slowly too, it was very soothing, even hypnotic. It was not a light like planes, helicopters or even standard lights, but like dimmed light. The object was advancing slowly and all of a sudden, a lightning that goes off to the left (direction Chaumont), and we no longer see the machine during 10-15s, but after that it reappears on the same trajectory as before. He did the same thing a second time over our head. After it reappared again above our heads, and it continued its trajectory by turning off and on again very slowly with these 3 large dimmed luminous balls.