My 2+ year old son and I every night before bedtime we go to the balcony and watch at the lights in the sky... when I say lights I mean airplane lights, the moon, a few stars... my son likes to point at the moon and say to me "μπαμπά κοίτα...φεγγάρι" which means "daddy look... moon". For everybody that don't know, kids like to repeat themselves. On 18 September this year it was a beautiful night with absolutely clear sky. Then my kid pointed at an "airplane" that caught my attention because of its speed and the fact that it was soundless. Not having time to analyze what I saw,at that point I starred right up and there they were, two flying objects (two "dull" lights) in a disc shape like pushpin head(larger than an airplane,smaller than the moon) coming from the north i believe in a very slow speed,stood still for some seconds,going a bit further again(the movement resembled that of a fish in the water),I called to my wife to come out to see if she could understand what was that and at that point they took off in an enormously high speed in the same direction the silent "airplane" was heading before,to the south I believe . When my wife came out she had just caught the take off but I was upset that he had just missed the rest. Right when I started to describe what I saw we both starred up and there they were again. I don't know if there were the same or different, but it seemed to be for few seconds longer.Unfortunately I don't have recorded footage of this due to the fact that it lasted just a couple of minutes, I had my kid in my arms, I was stunned by the sight and I didn't want to miss anything just for running in and getting a camera to record. The second objects, after a small "dance in the sky" took off in the same way the first two did.They had a strange color light,something like dull gold/bronze, but again not exactly because it is difficult to describe it, a brighter perimeter and a black dot in the center. I want to mention that my wife and I always were very skeptical about such kind of testimonials and we still are. We tried to explain it somehow (drones, meteorological anomaly, something else), but nothing seems to fit in terms of what we know. We can't understand or explain what we saw and we don't expect any answers too... we will leave it that way, but only after sharing this testimonial with you. Thank you for your time...