Wikipedia:Selected anniversaries/October 27
This is a list of selected October 27 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.
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October 27: Labour Day in New Zealand (2008); Independence Day in Saint Vincent and the Grenadines and Turkmenistan
- 1275 – The earliest recorded usage of the name "Amsterdam" was made on a certificate by Count Floris V of Holland that granted the inhabitants, who had built a bridge with a dam across the Amstel, an exemption from paying the bridge's tolls.
- 1553 – Condemned as a heretic for preaching nontrinitarianism and anti-infant baptism, Michael Servetus (pictured) was burned at the stake outside Geneva.
- 1795 – The United States and Spain signed the Treaty of Madrid, defining the boundaries of the United States with the Spanish colonies and guaranteeing the United States navigation rights on the Mississippi River.
- 1838 – Governor of Missouri Lilburn Boggs issued the extermination order, ordering all Mormons to leave the state or be exterminated.
- 1971 – The Democratic Republic of the Congo was renamed Zaire after a Portuguese mispronunciation of the Kikongo word nzere or nzadi, which translates to "the river that swallows all rivers."