First of all I apologise for my poor english.Yesterday, arourd 21:30 I went to my balcony and saw this bright light in the sky moving fast horizontaly, then making a curve. After a short moment it descended and disapeared behind the buildings in front of my house. I did not hear any sound. The light kept on appearing for several times during around 15 minutes. Could it be a drone with a light for night flight? Possibly! But drones make some noise and as I said it was a silent night in my town and I did not hear any noise. Or it could be far away for me not to hear it, but in that case, it would not rise so high in the sky. The second time it took-off I rush into my house to gram may camera and made a few records of that light.The intensity of the light, kept on changing randomly from time to time. Sometimes it almost disappeared to be bright the next second.