I saw a round UFO flying low over my head at night over the sky in Girona in the north east of Spain on 30.03.2015 at around 02:00 am. There was no noise and the object was emitting a very dim and diffuse amber glow similar in colour of the street lamps below but not bright. it was a rather large object and it was flying at constant speed and altitude roughly in a north - south direction. It was clearly visible well below the clouds and not far from the ground. It flew over my head and I was able to follow its trajectory all the way until it disappeared in the horizon. I was having a cigarette outside late at night with my friend when this happened.