Wikipedia:Selected anniversaries/September 13
This is a list of selected September 13 anniversaries that appear in 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 will soon 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 four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled featured article or picture of the day.
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.
September 13: Feast Day of Saint John Chrysostom (Western Christianity)
- 533 – Belisarius and his legions defeated Gelimer and the Vandals at the Battle of Ad Decimum near Carthage, and began the "Reconquest of the West" under Eastern Roman Emperor Justinian I.
- 1808 – Finnish War: Swedish forces under Lieutenant General Georg Carl von Döbeln defeated the Russians at the Battle of Jutas.
- 1956 – IBM unveiled the 305 RAMAC (Random Access Method of Accounting and Control) (pictured), the first commercial computer that used magnetic disk storage.
- 1987 – Goiânia accident: A radioactive item was stolen from an abandoned hospital in Goiânia, Brazil, contaminating hundreds of people.
- 1993 – After rounds of secret negotiations in Norway, PLO leader Yasser Arafat and Israeli Prime Minister Yitzhak Rabin formally signed the Oslo Peace Accords.