Wikipedia:Selected anniversaries/February 9
This is a list of selected February 9 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.
- 1920 – The Svalbard 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.
- 1950 – U.S. Senator Joseph McCarthy accused the U.S. State Department of being filled with communists, sparking a period of strong anti-communist sentiment in the United States that became known as McCarthyism.
- 1964 – English rock band The Beatles made their first appearance on American variety show The Ed Sullivan Show before a record-breaking audience, beginning a musical phenomenon known as the British Invasion.
- 1976 – The Australian Defence Force was formed by the unification of the Australian Army, the Royal Australian Navy and the Royal Australian Air Force.
- 2001 – The American submarine USS Greeneville accidentally collided with the Ehime Maru (wreckage pictured), a Japanese training vessel operated by the Uwajima Fishery High School.