What is a key clue suggesting an observation might be a satellite deployment, rather than another phenomenon?

Answer

The sighting occurs shortly after sunset or just before sunrise.

The best timing for viewing these trains is during 'sunlit passes,' which frequently occur just after sunset or just before sunrise when the ground is dark but the satellites are still illuminated.

What is a key clue suggesting an observation might be a satellite deployment, rather than another phenomenon?

#Videos

Explaining the straight line of lights in the night sky - YouTube

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