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statementVerified

Chronological tables under Eratosthenes’s name later attempt to fix literary and political dates from Troy onward

Olympiad reckoning and later Christian chronographers reuse and correct such tables. In the causal graph this event strengthens Digital Learning Access, a driver that weakens Learning Poverty Rate (low- and middle-income countries) — an improving welfare path.

Sources: [1][2]

Read the full account

Surviving numbers are later quotations, not a civil registry he signed.

Context

Olympiad reckoning and later Christian chronographers reuse and correct such tables. Accuracy of the Trojan date is not invented here.

Eratosthenes’s documented role is bounded by other offices and collaborators named in the sources below.

Conventional years are c.276–c.194 BCE. Almost no autograph survives. Cleomedes, Strabo, Nicomachus, and later encyclopedias are the public file. Classroom globe reconstructions are not his acts. Contribution is complex.

Why it matters

It is not a verified Bronze Age excavation.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Eratosthenes

    Person

    Direct responsibility

    responsibility level 0.4 · verified

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Britannica — EratosthenesEncyclopaedia Britannica · High credibility · verified
  2. 2.MacTutor — Eratosthenes of CyreneUniversity of St Andrews · High credibility · verified
What the sources establish

Britannica prints that Eratosthenes tried to fix dates of literary and political events since the siege of Troy; MacTutor places a Chronographiai in the Alexandrian file.

Britannica and MacTutor independently describe a chronological project under his name.

Established: later lives assign him a chronology from Troy. Not established: a complete autograph table or unique error bars on legendary dates.

Eratosthenes did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act. Keep later chronographers as carriers.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorEratosthenes
  2. contributed toFactChronological tables under Eratosthenes’s name later attempt to fix literary and political dates from Troy onward
  3. strengthensDriverDigital Learning Access
  4. weakensIndicatorLearning Poverty Rate (low- and middle-income countries)

Cite this page

Factrail. (2026). Chronological tables under Eratosthenes’s name later attempt to fix literary and political dates from Troy onward. Factrail. https://factrail.ai/facts/era-chronographiai

https://factrail.ai/facts/era-chronographiai

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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