Two very large, very bright round lights, flash on/off

I noticed two large round extremely bright white lights to my left just above the tree line. Very low, silent. I didn’t see a craft but it seemed the lights either had perfect formation or were attached to a single object. It either was stationary or moving exceptionally slow because it seemed to stay the same size and brightness for several minutes. In time it slowly moved in a straight trajectory north. It took more minutes before it was no longer visible. Unfortunately I didn’t have a phone on me. My family is full of pilots and lots of airplanes, this was nothing familiar.