I begin to wonder if it might not be a place in the world at all. Would it be a thing that the military might do, to create a simulation for training purposes, possibly even to demonstrate something that is small, slow and close can look larger, further away and faster and how parallax works, and how looking for things like "wait, it is actually passing in front of those windmills!" is worth doing!
If so, it would not shock me if Big UFO believed it was real, and passed it off as a real thing. And of course it would not be necessary to match a real windfarm...
Of course, if that is not a thing the military would do, then this is all moot!