September 3
day of the year
September 3 is the 246th day of the year (247th in leap years) in the Gregorian calendar; 119 days remain until the end of the year.
Events
Pre-1600
36 BC – In the Battle of Naulochus, Marcus Vipsanius Agrippa, admiral of Octavian, defeats Sextus Pompey, son of Pompey, thus ending Pompeian resistance to the Second Triumvirate.
301 – San Marino, one of the smallest nations in the world and the world's oldest republic still in existence, is founded by Saint Marinus.
590 – Consecration of Pope Gregory I (Gregory the Great).
673 – King Wamba of the Visigoths puts down a revolt by Hilderic, governor of Nîmes (France) and rival for the throne.
863 – Major Byzantine victory under general Petronas at the Battle of Lalakaon against an Arab raid under emir Umar al-Aqta, who is killed in battle.
1189 – Richard I of England (a.k.a. Richard "the Lionheart") is crowned at Westminster.
1260 – The Mamluks defeat the Mongols at the Battle of Ain Jalut in Palestine, marking their first decisive defeat and the point of maximum expansion of the Mongol Empire.
1335 – At the congress of Visegrád Charles I of Hungary mediates a reconciliation between two neighboring monarchs, John of Bohemia and Casimir III of Poland.
Begin with the source’s own compact description: “September 3” is day of the year. The dossier treats that line as a proposition to test through September and year, not as a finished interpretation.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 6, 2026. The linked authority identifier is Q2860. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1600, 1189, 1260 and 1335.
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This entry incorporates text from “September 3” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.