i used to sleep at night, in a front of our balcony, i always kept the door open, and i used to watch the sky every night before i sleep. the night of thursday (14/09/2017 about 3am to 3:30min), i saw two lights, one brighter than the other, i thought it was a plane, but i remembered that i never saw a plane flying in that direction before, i wanted to film it with my smartphone, but unfortunately i was afraid that i may lose the lights, there were "flying" parallel and going straight, but i barely noticed that the two lights are flying into a wide circle, and going away, they finally disappeared in the dark one after the other brighten one, i was very surprised and i was thinking about a logical argument to proof what i saw, but finally i decided to report it as a ufo. (sorry for my english)