Identified Flying Object

When I used to hold early evening stargazing sessions for the students, our attention on the sky sometimes found star-size objects moving in one direction across the sky. The students mistook it for a UFO, but I told them those are artificial satellites, and due to the angle of the sun relative to their position, it's one of only two times they could be seen.

This morning, leaving the house at 5am, I saw my first pre-sunrise satellite, travelling west to east, and fading from sight as it moved to where the sun was.