Wikipedia:Selected anniversaries/April 23
This is a list of selected April 23 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.
April 23: World Book and Copyright Day; St George's Day in various countries; Children's Day in Turkey.
- 1348 – The first-ever appointments of the Order of the Garter, an order of chivalry, founded by King Edward III of England, that is presently bestowed on recipients in the United Kingdom and other Commonwealth realms, were announced.
- 1661 – Charles II was crowned King of England, Ireland, and Scotland at Westminster Abbey.
- 1827 – Irish mathematician and physicist William Rowan Hamilton (pictured) presented his Theory of Systems of Rays.
- 1979 – Activist Blair Peach suffered fatal head injuries after being knocked unconscious during an Anti-Nazi League demonstration in Southall, London, against a British National Front election meeting in the town hall.
- 1985 – The Coca-Cola Company introduced "New Coke" to replace its flagship soft drink Coca-Cola, eventually generating so much negative response that the company put the original formula back on the market less than three months later.