From #23
Even more tricky are night lines with different courses on weekdays/weekends. This affects line N38 at Metalab, which stops at Burgtheater/Rathausplatz during the week, but starts at Schottentor on weekends. If we're lucky this is actually reflected with the different RBLs of Schottentor, but one has to check the API on a weekday night to find that out.
From #23