Herodotus begins composing the *Histories*Jan 1, 450 BCELabels: Herodotus, The HistoriesBritannicaWorldHistory
Founding of Thurii; Herodotus later associatedJan 1, 444 BCELabels: Thurii, HerodotusHerodotus bioBritannica
Peloponnesian War begins; Thucydides starts his historyJan 1, 431 BCELabels: Peloponnesian War, ThucydidesBritannicaThucydides
Athens suffers plague; Thucydides records symptomsJan 1, 430 BCELabels: Plague of, ThucydidesPlague AthensWorldHistory
Likely circulation of Herodotus’ *Histories* (traditional dating)Jan 1, 430 BCELabels: The Histories, HerodotusWorldHistoryCambridge
Thucydides’ command at Thasos precedes Amphipolis crisisJan 1, 424 BCELabels: Thucydides, ThasosThucydidesBritannica
Fall of Amphipolis leads to Thucydides’ exileDec 1, 424 BCELabels: Amphipolis, ThucydidesBritannicaAmphipolis
Peace of Nicias concludes a major war phaseMar 1, 421 BCELabels: Peace of, Athens-SpartaBritannicaPBS Greeks
Melian Dialogue episode placed in 416–415 BCEJan 1, 416 BCELabels: Melos, Melian DialogueMelianThucydides
Herodotus publication date debated in modern scholarshipJan 1, 414 BCELabels: Herodotus, scholarshipCambridge
Thucydides’ narrative breaks off in 411 BCEJan 1, 411 BCELabels: Thucydides, History unfinishedBritannicaThucydides
Cicero later coins “Father of History” for HerodotusJan 1, 44 BCELabels: Cicero, HerodotusIMEHerodotus