Wikipedia:Selected anniversaries/October 31

This is a list of selected October 31 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.

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Ineligible

Blurb Reason
; Reformation Day (Protestantism) refimprove
802Irene of Athens, the first empress regnant of the Byzantine Empire, was deposed and exiled to the island of Lesbos. refimprove
1587Leiden University Library in Leiden in the Netherlands opened its doors, becoming one of the significant cultural centres in Europe during the Age of Enlightenment. unreferenced section
1822 – Emperor Agustín de Iturbide of the First Mexican Empire dissolved the Mexican Congress and replaced it with a military junta answerable only to him. refimprove section
1864Nevada was admitted as the 36th U.S. state, in part to help ensure Abraham Lincoln's re-election as President of the United States eight days later. refimprove section
1922Benito Mussolini became Prime Minister of Italy; three years later he set up a legal dictatorship. refimprove section
2000Singapore Airlines Flight 006 collided with construction equipment while attempting to take off from Taiwan Taoyuan International Airport during heavy rain, killing 79 passengers and 4 crew members. refimprove sections
2003 – After 22 years in power, Tun Mahathir Mohamad retired as Prime Minister of Malaysia. featured on July 16
2011 – The United Nations declared that the world's population had exceeded seven billion. refimprove
Charles Taze Russell |d|1916 refimprove section

Eligible

October 31: Halloween

Strikers surrounding a streetcar in Indianapolis
Strikers surrounding a streetcar in Indianapolis
More anniversaries: