Wikipedia talk:Selected anniversaries/April 11

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This is the talk page for making suggestions or discussing improvements to Wikipedia:Selected anniversaries/April 11.

To report an error when this list is currently 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.
Before making a suggestion, please read the selected anniversaries guidelines. Please remember that this list usually defers to supporting pages when there is disagreement, so it is best to achieve consensus and make any necessary changes there first.
To discuss improvements to the corresponding April 11 article, see Talk:April 11 instead.

Frequently asked questions

Q1: Why is [Insert event here], an event that is "more important and significant" than all the others that are currently listed, not posted?: A1: Relative article quality along with the mix of topics already listed are often deciding factors in what gets posted. Any given day of the year can have a great many important or significant historical events. The problem is that there is generally only room on the Main Page to list about 5 events at a time, so not everything can be posted.

As stated on Wikipedia:FAQ/Main Page, the items and events posted on the Main Page are chosen based more on how well they are written, not based on how much important or significant their subjects are. It is easier for admins to select a well-written, cited, verifiable article over a poor one versus trying to determine objectively how much a subject is important or significant.

Keep in mind that the quality requirements only apply to the selected bolded article, not the other links. Thus, an event may qualify for multiple dates in a year if there is an article written in a summary style and an article providing detailed content; if one of those pages have cleanup issues, the other page can be bolded as an alternate.

Another criterion is to maintain some variety of topics, and not exhibit, just for example, tech-centrism, or the belief that the world stops at the edge of the English-speaking world. Many days have a large pool of potential articles, so they will rotate in and out every year to give each one some Main Page exposure. In addition, an event is not posted if it is also the subject of this year's scheduled featured article or featured picture.

Q2: There are way too many 20th-century events listed. Why aren't there more events from the 19th century and before?

A2: The short, basic reason is the systemic bias of Wikipedia. There are not enough good, well-written articles on 19th-century and earlier events for all 365 days in the year. Currently, a majority of users seem to be generally more interested in writing articles about recent events. If you would like to further help mitigate the systemic bias in Wikipedia, see Wikipedia:WikiProject Countering systemic bias.

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Q4: Why is the birthday/death anniversary of [Insert name here] not listed?

A4: There are only four slots available for birth and death anniversaries. As with the events, article quality and diversity in time period, geography, and reason for notability are all contributing factors in whether an article gets selected for inclusion.

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A5: Yes, there is a specified order: International observances first, then alphabetically by where observed.

Q6: Some of the holidays/observances that are listed have dates in parentheses beside them. What do they mean?

A6: There are two reasons that some holidays/observances have dates next to them:

Non-Gregorian-based holidays/observances are marked with the current year as a reminder to others that their dates do in fact vary from year to year.
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Today's featured article for April 11, 2025

Banded sugar worker ant with cocoon

The banded sugar ant (Camponotus consobrinus) is a species of ant endemic to Australia. A member of the genus Camponotus in the subfamily Formicinae, it was described by German entomologist Wilhelm Ferdinand Erichson in 1842. Its common name refers to the ant's preference for sweet food and the distinctive orange-brown band around its gaster. The ant is polymorphic and relatively large, with castes called major workers (soldiers) and minor workers. Ants in these groups measure around 5 to 15 millimetres (0.20 to 0.59 inches) in length. Mainly nocturnal, the ants prefer a mesic habitat, and are commonly found in forests and woodlands; they are also found in urban areas, where they are considered a household pest. The ant's diet includes sweet secretions obtained from aphids and other insects. Workers prey on some insects, killing them with a spray of formic acid. Banded sugar ants are prey for other ants, echidnas and birds. The eggs of this species were consumed by Indigenous Australians. (Full article...)

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Picture of the day for April 11, 2025

The Jewish Cemetery is an oil-on-canvas painting by the Dutch landscape painter Jacob van Ruisdael. Painted in 1654 or 1655, it is an allegorical landscape painting suggesting ideas of hope and death, while also being based on Beth Haim, a cemetery located on Amsterdam's southern outskirts, at the town of Ouderkerk aan de Amstel. Beth Haim is a resting place for some prominent figures among Amsterdam's large Jewish Portuguese community in the 17th century. Ruisdael presents the cemetery as a landscape variant of a vanitas painting, employing deserted tombs, ravaged churches, stormy clouds, dead trees, changing skies, and flowing water to symbolize death and the transience of all earthly things. The known provenance for the painting dates back only to 1739 and its original owner is not documented; since 1926, it has been owned by the Detroit Institute of Arts.

Painting credit: Jacob van Ruisdael

Recently featured:

← Wikipedia talk:Selected anniversaries/April 10 * Wikipedia talk:Selected anniversaries/April 12 →

1713 - War of the Spanish Succession (Queen Anne's War): Treaty of Utrecht
1775 - Last execution for witchcraft in Germany
1814 - Napoleon abdicates and is exiled to Elba.
1868 - The Shogunate is abolished in Japan
1888 - The Concertgebouw in Amsterdam is inaugurated.
1899 - Spain cedes Puerto Rico to the United States
1921 - First sports broadcast on the radio
1945 - World War II: United States forces liberate Buchenwald concentration camp
1947 - Jackie Robinson is the first African American to play in a modern-day Major League Baseball game
1951 - Korean War: President Harry S. Truman relieves General Douglas MacArthur of overall command in Korea
1968 - Lyndon Johnson signs the Civil Rights Act of 1968, prohibiting discrimination in the sale, rental, and financing of housing.

2012 notes

Rescued from Ineligible (unused): Buchenwald concentration camp; Civil Rights Act of 1968
Omitted: Uganda–Tanzania War
Included: Battle of Ceresole (first appearance); Australia 31–0 American Samoa (first appearance)
Repeats: Treaty of Fontainebleau (1814) (4th consecutive appearance, 4 total); SMS Blücher (2nd consecutive appearance, 3 total); Transjordan (2nd consecutive appearance, 2 total); Jessica Dubroff (2nd consecutive appearance, 2 total)
Note: I must have been really tired or something, because normally I wouldn't have kept in so many repeats. —howcheng {chat} 15:58, 11 April 2012 (UTC)[reply]

2013 notes

Omitted: Treaty of Fontainebleau (1814); SMS Blücher; Transjordan; Jessica Dubroff; Australia 31–0 American Samoa
Included: Nevill Ground (first appearance; 100th anniversary); Buchenwald concentration camp (7th appearance, last in 2010); President Truman's relief of General Douglas MacArthur (first appearance); Uganda–Tanzania War (2nd appearance, last in 2011)
Repeats: Battle of Ceresole (2nd consecutive appearance, 2 total)

—howcheng {chat} 06:16, 10 April 2013 (UTC)[reply]

2014 notes

Moved to Ineligible: Transjordan (maintenance); 1986 FBI Miami shootout
Omitted: Battle of Ceresole; Nevill Ground; Buchenwald concentration camp; President Truman's relief of General Douglas MacArthur; Uganda–Tanzania War
Included: Treaty of Fontainebleau (1814) (5th appearance, last in 2012; 200th anniversary); Concertgebouw (4th appearance, last in 2010; rescued from Ineligible); Kashmir Princess (first appearance); Civil Rights Act of 1968 (first appearance); 2011 Minsk Metro bombing (first appearance)

—howcheng {chat} 07:34, 10 April 2014 (UTC)[reply]

2015 notes

Moved to Ineligible: Tel Aviv (maintenance)
Omitted: Treaty of Fontainebleau (1814); Kashmir Princess; Civil Rights Act of 1968; 2011 Minsk Metro bombing
Included: Battle of Ceresole (3rd appearance, last in 2013); Emirate of Transjordan (4th appearance, last in 2012; rescued from Ineligible); Buchenwald concentration camp (8th appearance, last in 2013; 70th anniversary); Pacem in terris (first appearance)
Repeats: Concertgebouw (2nd consecutive appearance, 5 total)

—howcheng {chat} 07:34, 9 April 2015 (UTC)[reply]

2016 notes

Moved to Ineligible: Kashmir Princess (maintenance)
Omitted: Concertgebouw; Emirate of Transjordan; Buchenwald concentration camp (ineligible—maintenance); Pacem in terris
Included: Treaty of Fontainebleau (1814) (6th appearance, last in 2014); Nevill Ground (2nd appearance, last in 2013); President Truman's relief of General Douglas MacArthur (2nd appearance, last in 2013); Jessica Dubroff (3rd appearance, last in 2012)
Repeats: Battle of Ceresole (2nd consecutive appearance, 4 total)

—howcheng {chat} 06:00, 10 April 2016 (UTC)[reply]

2017 notes

Moved to Ineligible: Concertgebouw (maintenance); Civil Rights Act of 1968 (maintenance); Uganda–Tanzania War (maintenance)
Omitted: Nevill Ground; President Truman's relief of General Douglas MacArthur; Jessica Dubroff
Included: SMS Blücher (3rd appearance, last in 2012); Emirate of Transjordan (5th appearance, last in 2015); 2002 Venezuelan coup d'état attempt (5th appearance, last in 2009; rescued from Ineligible); Llywelyn the Great (first appearance); Christopher Smart (first appearance); Ewelina Hańska (first appearance)
Repeats: Battle of Ceresole (3rd consecutive appearance, 5 total); Treaty of Fontainebleau (1814) (2nd consecutive appearance, 7 total)

—howcheng {chat} 04:15, 11 April 2017 (UTC)[reply]

Suggested addition: 1968 - assassination attempt on Rudi Dutschke, the most prominent leader of the German student movement, by anti-communist Josef Bachman. Dutschke survived but died 11 years later as a result of health problems caused by his injuries. _pseudonym Jake Brockman ^talk 10:07, 9 April 2018 (UTC)[reply]
- @Jake Brockman: Unfortunately, one of the section is lacking in references, which makes the article ineligible for inclusion. —howcheng {chat} 16:00, 9 April 2018 (UTC)[reply]
  - @Howcheng: thanks for checking. I have added some references which help support the section. One is an article from the Washington Post, one from the German Spiegel (which was actually one of the journals he was opposing at the time. The third is from a Biography written by his former wife. I hope this helps. _pseudonym Jake Brockman ^talk 18:26, 9 April 2018 (UTC)[reply]
    - @Jake Brockman: I added {{citation needed}} tags to statements I felt needed to be cited. If you can supply those, you will be good to go. Thanks. —howcheng {chat} 18:38, 9 April 2018 (UTC)[reply]
      - @Howcheng: done. Some are in German or Danish unfortunately. I removed one section which seems unencyclopaedic (mentions of his name in popular culture - this is not really sourced well and seems somewhat off-topic). _pseudonym Jake Brockman ^talk 19:40, 9 April 2018 (UTC)[reply]
        @Jake Brockman: Non-English sources are not a problem. Good work! —howcheng {chat} 02:11, 10 April 2018 (UTC)[reply]
        @Howcheng: Thanks. Having slept on it, I'd suggest a change to the teaser text. I think the most notable outcome is not his death 11 years later, but the assassination attempt being the catalyst for the biggest wave of (sometimes violent) street protests in German history to that date._pseudonym Jake Brockman ^talk 06:33, 10 April 2018 (UTC)[reply]

2018 notes

Omitted: Battle of Ceresole; SMS Blücher; Emirate of Transjordan; 2002 Venezuelan coup d'état attempt; Llywelyn the Great (ineligible—maintenance); Christopher Smart; Ewelina Hańska
Included: Nevill Ground (3rd appearance, last in 2016); Rudi Dutschke (first appearance; 50th anniversary); Southern Ohio Correctional Facility (first appearance; 25th anniversary); Anawrahta (first appearance); Arthur Shrewsbury (first appearance); Joseph Merrick (first appearance)
Repeats: Treaty of Fontainebleau (1814) (3rd consecutive appearance, 8 total)

—howcheng {chat} 06:55, 11 April 2018 (UTC)[reply]

2019 notes

Rescued from Ineligible (unused): Peace of Utrecht (actually restored from accidental deletion); Civil Rights Act of 1968
Omitted: Treaty of Fontainebleau (1814); Nevill Ground; Rudi Dutschke; Southern Ohio Correctional Facility; Anawrahta; Arthur Shrewsbury; Joseph Merrick
Included: Battle of the Basque Roads (first appearance); Concertgebouw (6th appearance, last in 2015; rescued from Ineligible); Emirate of Transjordan (6th appearance, last in 2017); Pacem in terris (2nd appearance, last in 2015); Australia 31–0 American Samoa (2nd appearance, last in 2012); Edward Wightman (first appearance); Ferdinand Lassalle (first appearance); Kurt Vonnegut (first appearance)

—howcheng {chat} 16:09, 11 April 2019 (UTC)[reply]

2020 notes

Moved to Ineligible: Civil Rights Act of 1968 (maintenance)
New articles (unused): Romanos III Argyros; Percy Lavon Julian
Omitted: Battle of the Basque Roads; Concertgebouw; Emirate of Transjordan; Pacem in terris; Australia 31–0 American Samoa; Edward Wightman; Ferdinand Lassalle; Kurt Vonnegut
Included: Battle of Mohi (2nd appearance, last in 2008; rescued from Ineligible); Peace of Utrecht (4th appearance, last in 2010); Nevill Ground (4th appearance, last in 2018); Fall of Kampala (first appearance; blurb previously featured Uganda–Tanzania War, which has been moved to June 3, and is making its 3rd appearance, last in 2013; rescued from Ineligible); Southern Ohio Correctional Facility (2nd appearance, last in 2018); Stephen IV of Hungary (first appearance); Edward Everett (first appearance); Trevor Linden (first appearance; 50th birthday)

—howcheng {chat} 20:45, 12 April 2020 (UTC)[reply]

2021 notes

New articles (unused): Borussia Dortmund team bus bombing
Omitted: Battle of Mohi; Peace of Utrecht; Nevill Ground; Fall of Kampala; Southern Ohio Correctional Facility; Stephen IV of Hungary; Edward Everett; Trevor Linden
Included: Battle of Ceresole (6th appearance, last in 2017); Concertgebouw (7th appearance, last in 2019); Emirate of Transjordan (7th appearance, last in 2019; 100th anniversary); Relief of Douglas MacArthur (3rd appearance, last in 2016; 70th anniversary); Australia 31–0 American Samoa (3rd appearance, last in 2019); Ramadan ibn Alauddin (first appearance); Charles Evans Hughes (first appearance); Bunny Ahearne (first appearance)

—howcheng {chat} 07:27, 13 April 2021 (UTC)[reply]

2022 notes

Omitted: Battle of Ceresole; Concertgebouw; Emirate of Transjordan; Relief of Douglas MacArthur; Australia 31–0 American Samoa; Ramadan ibn Alauddin; Charles Evans Hughes; Bunny Ahearne
Included: Battle of Mohi (3rd appearance, last in 2020); Treaty of Fontainebleau (1814) (9th appearance, last in 2018); Nevill Ground (5th appearance, last in 2020); 2002 Venezuelan coup d'état attempt (6th appearance, last in 2017; 20th anniversary); Christopher Smart (2nd appearance, last in 2017; 300th birthday); Percy Lavon Julian (first appearance); Muhammad Kamaruzzaman (first appearance)

—howcheng {chat} 06:58, 12 April 2022 (UTC)[reply]