Wikipedia:Selected anniversaries/August 20
This is a list of selected August 20 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.
August 20: St. Stephen's Day in Hungary
- 917 – Byzantine-Bulgarian Wars: Bulgarians led by Tsar Simeon I (seal pictured) drove the Byzantines out of Thrace with a decisive victory in the Battle of Anchialus.
- 1794 – American troops defeated the Western Confederacy, a Native American alliance, at the Battle of Fallen Timbers, the decisive battle of the Northwest Indian War.
- 1804 – The Lewis and Clark Expedition, exploring the Louisiana Purchase, suffered its only death when Sergeant Charles Floyd died, apparently from acute appendicitis.
- 1991 – Singing Revolution: Estonia regained its independence from the Soviet Union.
- 1998 – The Al-Shifa pharmaceutical factory in Sudan was destroyed by a bombing attack launched by the United States in retaliation for the August 7 U.S. embassy bombings.