This is a list of selected February 9 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 may 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 how well they are written, not based on how much their subjects are important or significant. Only 5–6 events are posted at a time and thus not everything that is "most important and significant" can be listed.
Also, to maintain some variety of topics on the Main Page as a whole, an event is not posted this year if it is also the subject of the scheduled February 9, 2010 featured article or the February 9, 2010 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.
Admins: after updating please purge the cache of the Main Page so that the updated version appears.
- 474 – As the seven-year old Leo II was deemed too young to rule, his father Zeno was crowned as co-Byzantine Emperor.
- 1825 – After no presidential candidate received a majority of electoral votes, the United States House of Representatives elected John Quincy Adams President of the United States.
- 1895 – William G. Morgan, a YMCA physical education director in Holyoke, Massachusetts, US, invented a game called Mintonette, which evolved into volleyball (pictured).
- 1920 – The Spitsbergen Treaty was signed, recognizing Norwegian sovereignty over the Arctic archipelago of Svalbard, but all signatories were also given equal rights to engage in commercial activities on the islands.
- 1943 – World War II: Allied forces declared Guadalcanal secure, ending the Guadalcanal Campaign as a significant strategic victory for Allied forces fighting Japan in the Pacific War.
- 1964 – English rock band The Beatles made their first appearance on The Ed Sullivan Show before a record-breaking audience, beginning a musical phenomenon known as the British Invasion.
More anniversaries: February 8 – February 9 – February 10