Something similar to f57v.

[JoeyB]

A diagram from a prayer book. I can’t read it because I don’t know the required language.

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What is this, and how might it be related to f57v?

I'll spare everyone a cut-and-paste from AI but wanted to mention that the latest Grok (You are not allowed to view links. Register or Login to view.) model is actually pretty decent for dropping in an image like this and asking for language ID and attempt at a translation. This took 33 seconds on the free version. In the AI thread we tested chatgpt and fable a month or two ago as well.

I've shared this link before but if you get more into medieval calendars and ferial and dominical letter stuff I found this blog to be very helpful: You are not allowed to view links. Register or Login to view.