Lights very high in the sky moving aircraft speed moving from SW to NE direction. Evenly spaced in a straight line, appeared to be same height as a star but definitely much higher than aircraft. The lights seem to be diffused. There were about a dozen first pass, then slowly one by one faded out in the sky. About 10 minutes later they appeared again near the same star as first sighting, only there were many more this time. Still seeming to be in formation but with a couple of them spaced closer together. There were 30 or more this time which led me to believe maybe they were flying in a large circle. It was hard to decide if it was a large circle or if there were that many more flying in a straight line. No other aircraft visible in the sky at this time however aircraft sighted several minutes after disappearance of sited crafts. The lights did not vary in brightness but they were not as bright as aircraft or stars. I was looking NW when i first spotted them.
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Longmont
USA
20 minutes
20 minutes
40.15
-105.04
light
CO
Occurred : 5/6/2021 20:43 (Entered as : 04/06.21 20:43) Reported: 5/6/2021 11:16:39 PM 23:16 Posted: 5/20/2021 Location: Longmont, CO Shape: Light Duration: 20 minutes
Lights very high in the sky moving aircraft speed moving from SW to NE direction. ((Starlink satellites??))