Wikipedia:Selected anniversaries/August 12
This is a list of selected August 12 anniversaries that appears on the "On this day" section of the Main Page. To suggest a new item, in most cases you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial, or on a day that is or soon will be on the Main Page, please post your suggestion on the talk page instead.
Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only 5–6 events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is not generally posted this year if it is also the subject of the scheduled August 12, 2018 featured article or the August 12, 2018 featured picture.
To report an error when this appears on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.
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|International Youth Day||stub|
|Mother's Day and Queen Sirikit's Birthday in Thailand||Mother's Day: refimprove; Sirikit: unreferenced sections|
|1099 – The First Crusade concluded with the Battle of Ascalon and Fatimid forces under Al-Afdal Shahanshah retreating to Egypt.||refimprove|
|1121 – Georgian-Seljuk wars: Forces led by David the Builder decisively won the Battle of Didgori, driving Ilghazi and the Seljuk Turks out of Georgia.||refimprove section|
|1323 – Sweden and the Novgorod Republic signed the Treaty of Nöteborg resulting in a temporary hiatus in the Swedish–Novgorodian Wars.||referencing issues|
|1676 – Puritans and their Native American allies killed Wampanoag sachem Metacomet (known as "King Philip"), essentially ending King Philip's War.||refimprove sections|
|1851 – American inventor Isaac Singer was granted a patent for his sewing machine.||needs more footnotes|
|1952 – Thirteen Jewish poets in Moscow were executed for espionage based on false confessions.||referencing issues|
|1953 – The first Soviet thermonuclear bomb, Joe 4, was detonated at Semipalatinsk, Kazakh SSR.||refimprove section|
|1969 – Riots erupted in the Bogside area of Derry and spread across much of Northern Ireland.||refimprove|
|1994 – Major League Baseball players went on a 232-day strike, forcing the cancellation of the rest of the season and the World Series.||unreferenced section|
|2005 – Foreign Minister of Sri Lanka Lakshman Kadirgamar was fatally shot by a Liberation Tigers of Tamil Eelam sniper as he was getting out of his swimming pool at his home in Colombo.||refimprove|
- 30 BC – Cleopatra, the last ruler of the Egyptian Ptolemaic dynasty, committed suicide, allegedly by means of an asp bite.
- 1944 – After a week of indiscriminate killing of civilians in Wola, Warsaw, Poland, SS General Erich von dem Bach-Zelewski ordered that any remaining Poles be sent to labour or concentration camps.
- 1950 – Korean War: Members of the North Korean People's Army executed 75 captured U.S. Army prisoners of war.
- 1985 – Japan Airlines Flight 123 crashed into the ridge of Mount Takamagahara in Gunma Prefecture, Japan, killing 520 of 524 on board in the world's worst single-aircraft aviation disaster.
- 1990 – American paleontologi]] Sue Hendrickson found the most complete skeleton of a Tyrannosaurus ever discovered near Faith, South Dakota, U.S.
- Born/died: Abraham Zacuto (b. 1452) · Robert Southey (b. 1774) · Lord Castlereagh (d. 1822) · William Blake (d. 1827)
- 1877 – American astronomer Asaph Hall discovered Deimos, the smaller of the two moons of Mars.
- 1883 – The last known quagga (example pictured), a subspecies of the plains zebra, died at the Artis Magistra zoo in Amsterdam.
- 1914 – World War I: Despite the Belgian victory in the Battle of Halen, they were ultimately unable to stop the German invasion of Belgium.
- 1981 – The IBM Personal Computer, the original version and progenitor of the IBM PC compatible hardware platform, was introduced.
- 2000 – The Oscar-class submarine K-141 Kursk of the Russian Navy suffered an on-board explosion and sank in the Barents Sea during a military exercise.