ISS observation mistaken for a UFO

Summary

A witness in Saint-Cyr-sur-Loire (France) reported seeing a luminous point near the Moon moving vertically at a constant speed. Initially, the case seemed suspicious, as the object did not resemble a typical plane or satellite. However, checking with specialized tools like Calsky and Heavens-above confirmed that the object was the International Space Station (ISS). The only curious detail was that the witness recorded the observation five minutes later than expected. Upon investigation, it turned out that their clock was five minutes ahead. With this clarification, the case was classified as "A", meaning a normal observation of the ISS.