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The cutoff is nowhere near that soon after sunset. At midnight? Sure, you're not going to see satellites. But against a dark sky, you can see satellites reflect

The cutoff is nowhere near that soon after sunset. At midnight? Sure, you're not going to see satellites. But against a dark sky, you can see satellites reflecting for at least a couple hours. They may not be in direct sunlight as it gets later, but they are still illuminated by the atmosphere on the sunny side for a while.

adastra22 3y ago
Not low earth orbit satellites. As the name implies, those are flying low enough that they’re only briefly visible after sunset.
NikkiA 3y ago
The human eye might not, but they show up just fine in astrophotography, amateur or professional, all night long.