That makes sense. I'm least happy with the (day-in-)month circle, but felt the calendar portion wasn't really useful without handling it somehow.

I wanted the year circle to evoke Earth's orbit, so it had to be near the Sun. Inserting another circle was breaking that intuition (already stretched, tbh) for me. I was flip-flopping between these two and finally decided on the current solution.

I'm even more unhappy[0] with the fact that the number of ticks and speed on that circle changes every month, depending on the calendar month duration. For a world clock, on month changes it also means that you can't represent the date correctly for all shown timezones.

I could have used some real-world phenomena that are close to our calendar month instead[1], as pointed out by another commenter. This would make it "more correct" but "less useful in everyday situations". Even though I don't plan to use it every day, one of the goals of the project was for it to aspire to being useful.

[0] unhappy is a strong word; I mean I'm not satisfied with the solution, but was unable to find one I feel better about [1] https://en.wikipedia.org/wiki/Lunar_month#Types