When it is dark on Earth, but the satellite is still flying in the sunlight, you will be able to detect a satellite best. Satellites only become visible when their sun sails reflect the light of the sun and throw it back to the earth. The distance is simply too long for that. However, one would not be able to perceive the illumination of the space station with the eye to Earth anyway. An exception is the ISS, which is illuminated. They thus differ from other flying objects such as airplanes or helicopters in the night sky, which are equipped with strobe lights or position lights. Satellites themselves are usually not illuminated. The prerequisite is that the sky is cloudless and the clear view is not disturbed by (high) fog. Yes, principally you can see satellites flying in the night sky every night.
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