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...