Wikipedia:Selected anniversaries/July 21
This is a list of selected July 21 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, featured list 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.
July 21: Marine Day in Japan (2008); National holiday of Belgium; Racial Harmony Day in Singapore
- 356 BC – The Temple of Artemis in Ephesus, one of the Seven Wonders of the Ancient World, was destroyed in an act of arson by a man named Herostratus.
- 1403 – Forces under Henry IV of England defeated a rebel army led by Henry 'Hotspur' Percy at the Battle of Shrewsbury in what is now Battlefield, Shropshire, England.
- 1831 – In Brussels, Leopold I (pictured) was inaugurated as the first King of the Belgians.
- 1925 – Creation-evolution controversy: High school biology teacher John T. Scopes was found guilty of violating Tennessee's Butler Act by teaching evolution in class.
- 1954 – First Indochina War: The Vietnamese Demilitarized Zone was established at the Geneva Conference, partitioning Vietnam along the 17th parallel north into two zones: North Vietnam led by Ho Chi Minh and South Vietnam under Bao Dai.