I must admit that my best, and most prolonged, UFO sighting happened when I was eleven, way back in 1966. I've described it on here in some detail, so I won't bore you with it. I remember almost everything about it (although I really couldn't estimate the height, then or now).
Do you have a link to your sighting? I'd like to read it.
Note that I have not attempted to firmly estimate the height of the object we saw. Read carefully what I wrote in the various messages in this thread.
I was never sure at the time of the sighting how large the object was, so I could never be sure how high it was. As I explained in the original message, it
looked high from its washed out appearance but I knew both then (yes, even as a child) and now that that could be misleading.
Instead I have only stated rough possible heights that would have been necessary (based upon different possible object sizes) to create the apparent angular size that we observed.
I.e.
If it was a hang glider, I estimated it would have to have been at around 10,000 feet.
If it was a kite, it would have to have been large and presumably much lower. But, as I noted, we saw no strings.
If it was airliner sized, it would have to have been around 20-30,000 feet.
But which of those altitudes it really was I could not tell at the time, and certainly can't now.