Very cool, thanks for the link. I have a project idea to build a sundial of sorts that can incorporate this type of info for our location.

I googled the term in the center of that diagram, Nakshatra, and it's a term from Indian astronomy for the same concept: https://en.wikipedia.org/wiki/List_of_Nakshatras

I wonder if these were independently derived, or if there was some cultural cross-pollination between China and India? Seems plausible since they're right next to each other.