I seem to have a memory of using my 3D computer model to estimate the time that the photo was taken. And someone else, probably James Hackerott, also did the same. But I don’t see any of this in this thread. Perhaps we posted in a related thread?
Charles, I seem to recall your modeling of the sunlight striking one of the pipes and estimating the time from that. I also think it was John Mytton who suggested that idea as a possible way to time the photo. I thought that work was in this thread but can't find it either.