Thank you, this is the one I recall from my youth (having them around the house). I did not realize there was another one with an almost identical name (this post).
Did we all have a Mandela moment that what we all thought was "The Farmer's Almanac" with the yellow cover actually has OLD in the title? And there is randomly this other farmer's almanac?
Looks like it’s not a case of a fork and but rather of different publishers all trying to serve a common need with a well understood formula. There used to be many almanacs, then there were two, now there is one.
In Italy, where I grew up, my grandparents used to read the Almanacco di Barbanera; the first edition came out in 1762. It is still around https://www.barbanera.it/