My sighting was shaped like a flat disc, it was almost like a very dimly lit squashed light bulb. what attracted me to look out of the window was the sound of a very heavy deep sounding multi engined turboprop which was extremely unusual for my hometown. it was dark outside and looking for the aeroplane i saw the object heading on a southerly course zig zagging rapidly from side to side. all aircraft to my knowledge are not capable of this type of maneuvering that the craft was making. i was 11yrs old and naturally my parents did not believe me! the date i have given is my best estimate, but what again piqued my interest was seeing a sighting report back in 2016 from a nearby raf base where some of the base staff witnessed this event back in 1977. i am a mechanical engineer, i now live and work in the middle east and to this day i know i saw something which i have never seen before or since. it was not some bullshit orb, a reflection in the window, a streetlight, an aeroplane or a shooting star. this was real and i would love to know of similar sightings around that time.