I remember seeing this 'calendar' in a book about some German alchemical/rosicrucian manuscript (D.O.M.A.)
If I recall correctly, it kind of seemed like it was added as an afterthought, unrelated to the book, but it actually seemed more interesting. It was a big fold-out page in the middle of the book with an astrological diagram and tons of seals, planetary stuff, angelic names, etc. all in latin and hebrew. Lots of interesting stuff crammed in small font on a large sheet, much of it a little too small and fuzzy to make out.
Anyway, my ex demanded the book back (although I removed and kept the calendar

Thanks