Looking up at the sky i saw 8 lights flying in a delta formation. the lights were like halos, round but empty in the center. the lights suddenly reoriented into a four point box inside a larger four point box never changing course. there was a low haze that night that gave the lights a less than sharp edge. i lost view as they moved beyond my roof line. the event lasted a maybe 30-40 seconds. the lights were moving at a gentle pace.