Wikipedia:Selected anniversaries/June 13
This is a list of selected June 13 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 June 13, 2019 featured article or the June 13, 2019 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.
- 313 – The Edict of Milan, an agreement between Constantine the Great and Licinius to treat Christians benevolently within the Roman Empire, was posted in Nicomedia.
- 1886 – King Ludwig II of Bavaria was found dead in Lake Starnberg near Munich under mysterious circumstances.
- 1952 – Soviet warplanes shot down a Swedish military Douglas DC-3A-360 Skytrain carrying out signals intelligence gathering operations, which was followed by the shootdown of a Catalina flying boat searching for the Skytrain three days later.
- 1971 – The New York Times began to publish the Pentagon Papers, a 7,000-page top-secret United States Department of Defense history of the nation's political and military involvement in the Vietnam War.
- 2010 – The Japanese Hayabusa (model pictured) space mission became the first to return samples of an asteroid (25143 Itokawa) to Earth for analysis.