Wikipedia:Selected anniversaries/September 15
This is a list of selected September 15 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.
September 15: Independence Day for Costa Rica, Guatemala, Honduras, Nicaragua and El Salvador (1821); Battle of Britain Day in the United Kingdom
- 668 – Constans II, Emperor of the Byzantine Empire, was assassinated in his bath.
- 1830 – During the opening of the Liverpool and Manchester Railway (pictured), British Member of Parliament William Huskisson was struck and killed by the steam locomotive Rocket.
- 1831 – The John Bull, currently the oldest operable steam locomotive in the world, ran for the first time in New Jersey on the Camden and Amboy Railroad.
- 1835 – During the second voyage of HMS Beagle, Charles Darwin reached the Galápagos Islands, where he further developed his theories of evolution.
- 1935 – Nazi Germany enacted the Nuremberg Laws, which deprived German Jews of citizenship, and adopted a new national flag emblazoned with a swastika.
- 2008 – The financial crisis of 2007–2010: The global financial-services firm Lehman Brothers filed for bankruptcy while holding over US$600 billion in assets, the largest such filing in U.S. history.