Standing on my back deck after nightfall. (19:30 local time, 00:30 GMT) Thin, high scattered to broken clouds. Directly above me at high altitude, I observed a light, that I first thought to be a reflection off a satellite due to the altitude and speed of the object. It was travelling in an Eastbound direction. As I continued to watch the object, it started changing directions and speed abruptly. At times it would momentarily come to a complete stop. It moved in just about every direction on the compass at one time or the other. There was no noise, so that help to determine to me that it was at a high altitude, perhaps even outside the atmosphere. I continued to observe the object until the clouds obscured it from my view at 7:53 local time. (00:52 GMT). During the time I observed the object, it continued to move in an erratic fashion, both directionally and in velocity.