Around 9.24 pm , when I was talking with my mother I looked up at sky and I saw a formation of lights below clouds (slightly cloudy) that formation was of size of football field or can say slightly bigger than football field, there was no sound coming from that . when me and my mother watching it, it took U turn , and went into clouds . We saw it very closely but still I can't describe its shape but that thing definitely had shape , mom said it was rectangular, but I am not sure. For me it looked like a previous formation that I saw ( I saw same kind of formation a month ago). When it went into clouds I saw 2 aeroplanes I guess chasing it. Formation had yellow ,red lights and may be other lights too. I am not sure but definitely it has yellow and red light.