Latest / Ancient Greece: Philosophy, Democracy, and Endless War — Fexingo History / The Athenian Calendar: How the Greeks Measured Time
Transcript
- Lucas: If you've been following our conversations about Athens, you've probably noticed we keep mentioning months, years, festivals — but we've never actually stopped to ask: how did the Athenians even measure time? It's one of those things that sounds simple but gets weird fast. Luna: I've always assumed they just used a solar calendar like us. Lucas: Right, that's the instinct. But Athens didn't have one calendar — it had at least three running at the same time. There was a lunar calendar for festivals, a civil calendar for politics, and an astronomical calendar for farmers and astronomers. And they didn't always line up. Luna: Three calendars? That sounds like a scheduling nightmare. Lucas: It kind of was. Let's start with the simplest one: the festival calendar. It was based on the moon, so each month began with the new moon. The year started in midsummer with the month Hecatombaion — that's when the great Panathenaia was held. But a lunar year is only about 354 days, while the solar year is 365. So if they just stuck with lunar months, the festivals would drift through the seasons. In a few decades, the winter festival of the Anthesteria would end up in summer. Luna: So how did they stop that from happening? Lucas: They added an extra month — intercalation. Every few years, they'd insert a whole extra month, like a second Poseideon. But the decision wasn't based on astronomy; it was made by magistrates, often for political reasons. You could extend a year to delay an election or shorten one to rush a trial. It was messy. Luna: So the calendar was basically a political tool. Lucas: Exactly. And that's where the civil calendar comes in. The Athenian year was also divided into ten prytanies — each representing one of the ten tribes. The Boule, the council of 500, was split into ten groups, and each group served as the executive committee for one prytany. The first prytany began in Hecatombaion, but because of intercalation, the length of each prytany could vary. In a normal year, they were 35 or 36 days; in an intercalary year, they were 38 or 39. Luna: Did they have names for the years like we do? Lucas: They did. They dated years by the archon eponymos — the chief magistrate who gave his name to the year. So instead of 432 BCE, they'd say 'the year when Pythodoros was archon.' That's one reason why historians have to cross-reference so much to get precise dates. Different city-states had different archons, so coordinating events across Greece was a puzzle. Luna: And I assume the archon's term started at a different time than our year. Lucas: Right, the archon year began in midsummer, around our July. So if you're reading a translation that says 'in the archonship of so-and-so,' it's not a calendar year that matches our january to december. That's caused a lot of headaches for classicists. Luna: On that note, I want to mention something. We've been doing these episodes without any ads, and we'd like to keep it that way. If you appreciate the deep dives on things like the Athenian calendar, you can support the show at buy me a coffee dot com slash fexingo. It's a simple way to keep us ad-free and focused. Lucas: Yeah, absolutely. No ads, no sponsors, just the history. And listener support makes that possible. So if you've been enjoying these conversations, that link is buy me a coffee dot com slash fexingo. Now, back to the calendar — there's a third system: astronomical. The astronomer Meton, around 432 BCE, proposed a 19-year cycle that aligned lunar months with the solar year by adding seven intercalary months. That cycle, the Metonic cycle, is still used for calculating the date of Easter today. Luna: So Meton basically fixed the drift problem? Lucas: In theory, yes. But the Athenians didn't adopt it as law — they kept intercalating politically. The Metonic cycle was more of a reference for astronomers and farmers. The actual civic calendar remained a mess. For example, we know from inscriptions that in some years, the prytanies didn't even correspond to the correct months because of irregular intercalations. Luna: It almost sounds like they didn't care about precision. Lucas: Not in the way we do. For the Athenians, the calendar was primarily about religious and civic order — when to hold a festival, when to call an assembly. Exact solar alignment was secondary. Thucydides famously complains about this: he dates events by summer and winter, not by months, because the Athenian calendar was too unreliable. Luna: So that's why he uses 'in the summer of the fifteenth year of the war' instead of a date. Lucas: Exactly. And different Greek cities had different month names. Athens had Hecatombaion, Metageitnion, Boedromion, and so on — twelve months. But in Boeotia, the months were totally different. So cross-dating events between Athens and Thebes required converting from one local calendar to another. Luna: I imagine that makes modern historians' jobs a lot harder. Lucas: Immensely. We have to piece together dates from inscriptions, astronomical references, and cross-references. For example, we know that the Battle of Marathon happened in the month Boedromion, around our September, because the Spartans said they couldn't come until the full moon — that's a religious festival, the Carneia. That kind of detail helps us anchor events. Luna: The full moon detail from Ep 157 — I remember that. Lucas: Right. So the calendar wasn't just a timekeeping tool; it was deeply embedded in religion and politics. And because it was so localized, it's one of the many things that made Greece a collection of independent city-states rather than a unified nation. Luna: It's fascinating how something as mundane as a calendar tells us so much about how a society thought. Lucas: Absolutely. And it's a reminder that our own calendar is not universal — it's a product of Roman and Christian history. The Athenians didn't have weeks, for instance. They divided the month into three decades of ten days, but the days themselves were named after the moon's phase. So the 1st was noumenia, new moon, the 10th was the 10th, and so on. Luna: No weekends off, then. Lucas: No, but they had festivals — lots of them. And those were the breaks. So the next time you hear about an event in ancient Athens, remember the date might be a best guess, and that's part of the story.