That's why I put the martius screenshot there 
This is fine if it's the case, and I genuinely don't mean to argue, but why do almost identical manuscripts use september too?
The entries with "Bildungscampus Nürnberg, Cent." in them have a bunch of these almost identical calenders.
Cent. III, 87: martius, aprilis, maius, junius, julius, augustus, september, october, nouember, december
Cent. VII, 18: martius, aprilis, mayus, junius, julius, augustus, septembris, octobris, nouemb', decembris
What is causing these forms to change here?
This is fine if it's the case, and I genuinely don't mean to argue, but why do almost identical manuscripts use september too?
The entries with "Bildungscampus Nürnberg, Cent." in them have a bunch of these almost identical calenders.
Cent. III, 87: martius, aprilis, maius, junius, julius, augustus, september, october, nouember, december
Cent. VII, 18: martius, aprilis, mayus, junius, julius, augustus, septembris, octobris, nouemb', decembris
What is causing these forms to change here?
![[+]](https://www.voynich.ninja/images/collapse_collapsed.png)