A few years I've made a similar, yet totally different experience : Light in the sky.
It looked like dots of light circling under a cloud; it looked as if on the underside (the bottom) of a cloud there were dots which enlightened these dot-shaped parts of the clouds. And these dots were circling.
I found out that this was something man-made I hadn't expected : Someone invented some strange sort of party-light (at least that's how I see it), to enlighten an area during an event (party ?) in the night. This thing was constructed so that the light was filtered through a filter which has holes in it, thus creating these "dots" of light.
I still don't see much sense in this "machine", but I guess that it actually exists.
Will look for a link explaining it, but I'm not sure whether I'll find some ...
Alrik.
