When I was researching for this project, I also received the opportunity to look at a full length calendar within a psalter (Specifically UCR 002 2V), and when I compared it to the calendars we’ve been looking at (Specifically UCR012V) I noticed some inconsistencies. Take a look at both of the following images, especially the Golden Numbers (the red roman numerals in the column on the far left side):
There seems to be some inconsistencies with what days the golden numbers should land on. In the psalter (the image on the right) every golden number starting on April 3rd (III N; XIX) through April 27th (V KL; XIIII) has been shifted up one day in comparison with our original calendar (the image on the left). In our original calendar the golden number XIX lands on April 4th (II N) and XIIII lands on April 28th (IIII KL). Again this inconsistency may be because of human error, or more likely because the scribes used different exemplars, which within themselves were also inconsistent. Regardless, one of the most important aspects of Medieval Calendars is their reusability. However, in order for the calendars to be reusable it is important that these calendars are consistent. So it is interesting that such an error was merely passed over.
Now, before you leave I have some final thoughts.