A bunch of old ladies were talking (bordering on upset) in the antiques shop and looking out through the window. This is what they were watching.
They asked me what I thought it was. I told them what I thought it was. My answer was really boring. One of them told me, distinctly, “I have seen many of those and they have never looked like that”.
Well, the speculation is more fun than a dull explanation any day. Who cares – it was beautiful.