The M1 and M2 lines in Lille, France have a confusing schedule. It's 7 days per week, but it looks like it's "running" basically 24h hours per day (minus some ten-minute delay). I never took the metro later than 11 PM when I was in Lille last year, but people told me that it stops just before midnight. But... it looks like it starts right back up again immediately, after about 10 minutes.
What are the actual hours of the Lille M1 and M2 lines? I have a hard time believing that they're 24/7...
This is an error in how Movit is calculation for the first and last train. It seems to be assuming the first train of the day is the first train after midnight, and the last train the last train before midnight. The system does shut down overnight, but as the last train is after midnight this error has occurred.
Click "VIEW FULL SCHEDULE" and then the name of an individual stop to see the first and last train for each stop; here they are shown correctly.
There is a night train, but it's only during weekends and aimed at 'student locations' https://www.transpole.fr/cms/institutionnel/se-deplacer/ligne-de-nuit/. It also runs during big 'party' events like the annual braderie, or probably new year. Regular schedule stops at midnight and resumes at 5am.