Researchers home in on possible “day zero” for Antikythera mechanism
&gt;He concluded that the device was specifically designed to model &quot;epicyclic&quot; motion in keeping with the ancient Greek notion that celestial bodies moved in circular patterns, called epicycles. (This was pre-Copernicus, so the fixed point around which they moved was believed to be the Earth.)<p>Slightly tangential, but the whole pre&#x2F;post-Copernicus narrative seems unlikely to be true to me. At least I find it difficult to believe it wasn&#x27;t until the 16th century that someone worked this out and everyone prior was of some woefully mistaken (yet suspiciously Christian-aligned) view that the Earth was the center of the universe.