This light appeared in the night sky directly over my house last evening. First, the full shot, then a crop:
It was very high in the sky and moving linearly. But perhaps it's not quite as inexplicable as the black ring that appeared over England:
Video HT: American Digest.
Okay, it's been more than a day since I posted this. I have no idea what the black ring was over England. But the light in my night sky was a jet plane with unusual lights - not an airliner, but smaller like a large biz jet. Only when it flew directly over me did the sound of the engines reach my ears, unmistakably jets. The exterior lights were still unusual, though.