Over a period of about 40 minutes I noticed points of light moving across the sky. I had binoculars. Some of these points of light visible to the naked eye. Others only appeared in the viewfinder as I was following another. On two occasions two points of light moved in synchrony with each other. On one occasion for a few seconds there were four moving points of light visible through the binoculars, each moving independently of the others. Over the entire period there was a lot of activity. As one light moved off I looked around and within a few seconds another movement could be see somewhere and I followed it. A lot of the lights, not all, followed a particular path. I would say over the 40 minutes perhaps 6 or 7 following an identical path through the sky.