ἱστορίαι Historiai
Year — one rung of the editor’s lattice; every claim below carries its ground or says it has none

489 BCE

Ol. 72, 4 · archon Aristides · within Olympiad 72 · 3 claims on the desk receipt — the chronology desk

Where the calendars part — the record's own argument over this year's dates; both sides served, the referee cited
date contested The record argues with itself about this archonship: Demetrius of Phalerum moves Aristides' year to after Plataea; Plutarch answers him from the official records.
And yet Demetrius of Phalerum says that it was a little while before his death, and after the battle of Plataea, that the man held this office. But in the official records, after Xanthippides, in whose year of office Mardonius was defeated at Plataea, you cannot find, long as the list is, so much as the name Aristides Plut. Aristides 5 Aristides · Plutarch
The reckonings — how the year is counted, system by system; lookup from the table, never arithmetic
date conventional Clinton counts the year Olympiad 72, 4, with Aristides archon — on the word of the Parian Marble and Plutarch.
489. 72, 4. Aristides. Mar. Par. No. 50. Plutarch. Aristid. c. 5. Clinton, Fasti Hellenici vol. II (Oxford 1841), p. 28 cited, never reprinted — the apparatus shelf
The record dates itself — the ancients' own year-namings and day-namings, verbatim, linked to their episodes
date conventional Plutarch reads the archonship straight off the list: Aristides took the office of Archon Eponymous — the year after Phaenippus.
Aristides at once received the office of Archon Eponymous. Plut. Aristides 5 Aristides · Plutarch
The year’s deeds

No curated deed is anchored to this year yet — a fact about the index, not about the year.

The lattice — the poured rungs on either side; a gap here is a fact about the desk

The record here: 166 works · 12,119 episodes served · the desk is lookup, not arithmetic — claims carry grounds: episode, page, or an honest open

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