Me and my girlfriend were sitting on the balcony in Assos, Kefalonia and around 21:30 We saw a long line of lights traveling across the sky(maybe 20 or more). They slightly were moving up and down giving the string of lights a wavy kind of motion. After about 2 mins they disappeared. I am a bit of a skeptic but now believe this may have been my first and only UFO sighting. Hope it was a friendly visit/fly over.