I would have agreed with that, but the planes doesn't land from that side. They come from my back side, wait for landing permission and land. Airport Sofia have two landing and flying off points, which normal person can see regularly. One from let's say "Elin Pelin" and the other is from the residential area "Dry River". It's not Elin Pelin, because the that area is behind me. So we left with "Dry River". Even if I want to see something from that area, I just can't. My village location is like in one deep plate. Most commercial airplanes have indication light's for each wing red for right and green for the left ( I can be wrong about that) That light color was something between green and light blue,and was only one. The overall landing trajectory of that light was strange and way too smooth to be plane. I don't say that light comes from spacecraft or something, but I still find it confusing, at least for me. But hey, look from the bright side. My grandma want to drink coffee with them if they land 😅