December 9
day of the year
December 9 is the 343rd day of the year (344th in leap years) in the Gregorian calendar; 22 days remain until the end of the year.
Events
Pre-1600
536 – Gothic War: The Byzantine general Belisarius enters Rome unopposed; the Gothic garrison flees the capital.
730 – Battle of Marj Ardabil: The Khazars annihilate an Umayyad army and kill its commander, al-Jarrah ibn Abdallah al-Hakami.
1432 – The first battle between the forces of Švitrigaila and Sigismund Kęstutaitis is fought near the town of Oszmiana (Ashmyany), launching the most active phase of the Lithuanian Civil War.
1531 – The Virgin of Guadalupe first appears to Juan Diego at Tepeyac, Mexico City.
1601–1900
1636 – The Qing dynasty of China, led by Emperor Hong Taiji, invades Joseon.
1775 – American Revolutionary War: British troops and Loyalists, misinformed about Patriot militia strength, lose the Battle of Great Bridge, ending British rule in Virginia.
1822 – French physicist Augustin-Jean Fresnel, in a memoir read to the Academy of Sciences, coins the terms linear polarization, circular polarization, and elliptical polarization, and reports a direct refraction experiment verifying his theory that optical rotation is a form of birefringence.
1824 – Patriot forces led by General Antonio José de Sucre defeat a Royalist army in the Battle of Ayacucho, putting an end to the Peruvian War of Independence.
1835 – Texas Revolution: The Texian Army captures San Antonio following the Siege of Béxar.
Begin with the source’s own compact description: “December 9” is day of the year. The dossier treats that line as a proposition to test through December and year, not as a finished interpretation.
Why this record matters
The phrase “day of the year” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 30, 2026. The linked authority identifier is Q2304. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1600, 1432, 1531 and 1601.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “December 9” 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.