Shameless plug, but for anyone interested in learning more, I do a podcast on the history of astronomy and did an episode on the Roman calendar: https://songof

Shameless plug, but for anyone interested in learning more, I do a podcast on the history of astronomy and did an episode on the Roman calendar: https://songofurania.com/episode/024 https://songofurania.com/episode/024 One of the interesting things about their calendar is that because the role of weekdays was much weaker in Roman society, they could actually reuse calendars from year to year. Wealthy people would paint a calendar on the wall of their home and there were calendars literally etched into stone in public places.