Since I've been researching this topic these past 3 or so years, I've compiled extensive notes..... One thing I've done is to catalog sightings that closely match mine.
Here's one:
"A friend and I saw something very similar about 20 years ago. It was about 6 to 7:00 PM on a clear night facing to the west of where we were standing in Mogo, NSW Australia. The lights were zigzagging down then up down up then around in circles very erratic as if they were playing tag or something. This went on for a few minutes then they just took off vertically and disappeared at super high speed.."
Cassius Clay seems to have seen what I saw as well: "Many times, in the early morning hours, if you look up in the sky you can see them playing tag between the stars, really high up. "