# On this day: April 11

April 11 is the 101st day of the year (102nd in leap years), with 264 days left until the end of the year.

## April 11 in one line

Headline entries for April 11, from Wikipedia: in 1713, The main treaties of the Peace of Utrecht were signed in Utrecht in the Dutch Republic, helping to end the War of the Spanish Succession; born 145: Septimius Severus, Roman emperor (probable; died 211); died 2007: Kurt Vonnegut, American novelist, short story writer, and playwright (born 1922). In 2026 it is a Saturday, in 2027 a Sunday.

## Events on April 11

- 491 Anastasius I Dicorus became the Eastern Roman emperor. [Wikipedia](https://en.wikipedia.org/wiki/Anastasius_I_Dicorus)
- 1544 Italian War of 1542–1546: French and Spanish forces fought a massive pitched battle in the Piedmont region of Italy. [Wikipedia](https://en.wikipedia.org/wiki/Battle_of_Ceresole)
- 1689 William III and Mary II were crowned joint sovereigns of England in a ceremony at Westminster Abbey. [Wikipedia](https://en.wikipedia.org/wiki/William_III_of_England)
- 1713 The main treaties of the Peace of Utrecht were signed in Utrecht in the Dutch Republic, helping to end the War of the Spanish Succession. [Wikipedia](https://en.wikipedia.org/wiki/Peace_of_Utrecht)
- 1809 Napoleonic Wars: A hastily assembled Royal Navy fleet launched an assault against the main strength of the French Atlantic Fleet; an incomplete victory led to political turmoil in Britain. [Wikipedia](https://en.wikipedia.org/wiki/Battle_of_the_Basque_Roads)
- 1814 The Treaty of Fontainebleau was signed, ending the War of the Sixth Coalition and forcing Napoleon to abdicate as ruler of France and sending him into exile on Elba. [Wikipedia](https://en.wikipedia.org/wiki/Treaty_of_Fontainebleau_(1814))
- 1885 Luton Town Football Club was founded in England. [Wikipedia](https://en.wikipedia.org/wiki/Luton_Town_F.C.)
- 1888 The Concertgebouw in Amsterdam, considered one of the world's finest concert halls, was inaugurated. [Wikipedia](https://en.wikipedia.org/wiki/Concertgebouw%2C_Amsterdam)
- 1908 Blücher, the last armored cruiser built by the Imperial German Navy, was launched. [Wikipedia](https://en.wikipedia.org/wiki/SMS_Bl%C3%BCcher)
- 1913 The cricket pavilion at the Nevill Ground was destroyed in an arson attack that was attributed to militant suffragettes as part of a country-wide campaign co-ordinated by the Women's Social and Political Union. [Wikipedia](https://en.wikipedia.org/wiki/Nevill_Ground)
- 1919 Paris Peace Conference: Woodrow Wilson overturns Japan's Racial Equality Proposal, stating that unanimous support was required. [Wikipedia](https://en.wikipedia.org/wiki/Racial_Equality_Proposal)
- 1921 Emir Abdullah established the first centralised government in the recently created British protectorate of Transjordan. [Wikipedia](https://en.wikipedia.org/wiki/Emirate_of_Transjordan)
- 1930 Anglo-Indian hunter Jim Corbett shot the second of the man-eating tigers of Chowgarh. [Wikipedia](https://en.wikipedia.org/wiki/Jim_Corbett)
- 1951 U.S. president Harry S. Truman relieved General of the Army Douglas MacArthur of his commands for making public statements about the Korean War that contradicted the administration's policies. [Wikipedia](https://en.wikipedia.org/wiki/Relief_of_Douglas_MacArthur)
- 1951 The Stone of Scone, removed months earlier by Scottish students, was found on the altar of Arbroath Abbey. [Wikipedia](https://en.wikipedia.org/wiki/Stone_of_Scone)
- 1963 Pope John XXIII issued Pacem in terris, the first papal encyclical addressed to "all men of good will" rather than only to Catholics. [Wikipedia](https://en.wikipedia.org/wiki/Pacem_in_terris)
- 1965 Almost 50 confirmed tornadoes struck six states in the Midwestern United States during the Palm Sunday tornado outbreak, killing over 270 people and injuring 1,500 others. [Wikipedia](https://en.wikipedia.org/wiki/1965_Palm_Sunday_tornado_outbreak)
- 1968 Rudi Dutschke, the most prominent leader of the German student movement, survived an assassination attempt, which led to the largest protests to that date in Germany. [Wikipedia](https://en.wikipedia.org/wiki/Rudi_Dutschke)
- 1973 On the Art of the Cinema, a treatise on film propaganda in support of the ruling Workers' Party of Korea written by the future North Korean leader Kim Jong Il, was published. [Wikipedia](https://en.wikipedia.org/wiki/On_the_Art_of_the_Cinema)
- 1979 Uganda–Tanzania War: The allied forces of Tanzania and the Uganda National Liberation Front captured the capital Kampala, deposing Ugandan president Idi Amin. [Wikipedia](https://en.wikipedia.org/wiki/Fall_of_Kampala)
- 1993 Prisoners at the Southern Ohio Correctional Facility near Lucasville, Ohio, rioted and took over the prison for 11 days, resulting in the deaths of one officer and nine inmates. [Wikipedia](https://en.wikipedia.org/wiki/Southern_Ohio_Correctional_Facility)
- 1996 While attempting to set a record as the youngest person to pilot an airplane across the United States, the aircraft flown by seven-year-old Jessica Dubroff crashed in Cheyenne, Wyoming, killing her and two others. [Wikipedia](https://en.wikipedia.org/wiki/Jessica_Dubroff)
- 2001 In a FIFA World Cup qualifying match, Australia defeated American Samoa 31–0, the largest margin of victory recorded in international football. [Wikipedia](https://en.wikipedia.org/wiki/Australia_31%E2%80%930_American_Samoa)
- 2002 In a coup attempt, members of the Venezuelan military detained President Hugo Chávez and demanded his resignation. [Wikipedia](https://en.wikipedia.org/wiki/2002_Venezuelan_coup_attempt)
- 2011 A bomb exploded at Oktyabrskaya station on the Minsk Metro in Belarus, killing 15 people and injuring more than 200. [Wikipedia](https://en.wikipedia.org/wiki/2011_Minsk_Metro_bombing)
- 2017 The tour bus of the German football team Borussia Dortmund was attacked with roadside bombs in Dortmund, killing a police officer and injuring one of the team's players. [Wikipedia](https://en.wikipedia.org/wiki/Borussia_Dortmund_team_bus_bombing)
- 2023 A Myanmar Air Force airstrike killed at least 100 villagers in Pazigyi. [Wikipedia](https://en.wikipedia.org/wiki/Pazigyi_massacre)

## Born on April 11

- 145 Septimius Severus, Roman emperor (probable; died 211) [Wikipedia](https://en.wikipedia.org/wiki/Septimius_Severus)
- 1348 Andronikos IV Palaiologos, Byzantine Emperor (died 1385) [Wikipedia](https://en.wikipedia.org/wiki/Andronikos_IV_Palaiologos)
- 1357 John I of Portugal (died 1433) [Wikipedia](https://en.wikipedia.org/wiki/John_I_of_Portugal)
- 1770 George Canning, Irish-English lawyer and politician, Prime Minister of the United Kingdom (died 1827) [Wikipedia](https://en.wikipedia.org/wiki/George_Canning)
- 1825 Ferdinand Lassalle, German philosopher and jurist (died 1864) [Wikipedia](https://en.wikipedia.org/wiki/Ferdinand_Lassalle)
- 1862 Charles Evans Hughes, American lawyer and politician, 44th United States Secretary of State (died 1948) [Wikipedia](https://en.wikipedia.org/wiki/Charles_Evans_Hughes)
- 1893 Dean Acheson, American lawyer and politician, 51st United States Secretary of State (died 1971) [Wikipedia](https://en.wikipedia.org/wiki/Dean_Acheson)
- 1900 Sándor Márai, Hungarian journalist and author (died 1989) [Wikipedia](https://en.wikipedia.org/wiki/S%C3%A1ndor_M%C3%A1rai)
- 1905 Attila József, Hungarian poet and educator (died 1937) [Wikipedia](https://en.wikipedia.org/wiki/Attila_J%C3%B3zsef)
- 1920 Emilio Colombo, Italian lawyer and politician, 40th Prime Minister of Italy (died 2013) [Wikipedia](https://en.wikipedia.org/wiki/Emilio_Colombo)
- 1930 Anton LaVey, American occultist, founded the Church of Satan (died 1997) [Wikipedia](https://en.wikipedia.org/wiki/Anton_LaVey)
- 1932 Joel Grey, American actor, singer, and dancer [Wikipedia](https://en.wikipedia.org/wiki/Joel_Grey)
- 1950 Bill Irwin, American actor and clown [Wikipedia](https://en.wikipedia.org/wiki/Bill_Irwin)
- 1953 Andrew Wiles, English mathematician and academic [Wikipedia](https://en.wikipedia.org/wiki/Andrew_Wiles)
- 1953 Guy Verhofstadt, Belgian politician, 47th Prime Minister of Belgium [Wikipedia](https://en.wikipedia.org/wiki/Guy_Verhofstadt)
- 1960 Jeremy Clarkson, English journalist and television presenter [Wikipedia](https://en.wikipedia.org/wiki/Jeremy_Clarkson)
- 1980 Keiji Tamada, Japanese footballer [Wikipedia](https://en.wikipedia.org/wiki/Keiji_Tamada)
- 1981 Alessandra Ambrosio, Brazilian model[citation needed] [Wikipedia](https://en.wikipedia.org/wiki/Alessandra_Ambrosio)
- 1984 Nikola Karabatić, French handball player [Wikipedia](https://en.wikipedia.org/wiki/Nikola_Karabati%C4%87)
- 1987 Joss Stone, English singer-songwriter and actress[citation needed] [Wikipedia](https://en.wikipedia.org/wiki/Joss_Stone)
- 1991 Thiago Alcântara, Spanish footballer [Wikipedia](https://en.wikipedia.org/wiki/Thiago_Alc%C3%A2ntara)
- 1996 Dele Alli, English international footballer [Wikipedia](https://en.wikipedia.org/wiki/Dele_Alli)

## Died on April 11

- 678 Donus, pope of the Catholic Church (born 610) [Wikipedia](https://en.wikipedia.org/wiki/Pope_Donus)
- 1034 Romanos III Argyros, Byzantine emperor (born 968) [Wikipedia](https://en.wikipedia.org/wiki/Romanos_III_Argyros)
- 1890 Joseph Merrick, English man with severe deformities (born 1862) [Wikipedia](https://en.wikipedia.org/wiki/Joseph_Merrick)
- 1895 Julius Lothar Meyer, German chemist (born 1830) [Wikipedia](https://en.wikipedia.org/wiki/Lothar_Meyer)
- 1918 Otto Wagner, Austrian architect and urban planner (born 1841) [Wikipedia](https://en.wikipedia.org/wiki/Otto_Wagner)
- 1977 Jacques Prévert, French poet and screenwriter (born 1900) [Wikipedia](https://en.wikipedia.org/wiki/Jacques_Pr%C3%A9vert)
- 1983 Dolores del Río, Mexican actress (born 1904) [Wikipedia](https://en.wikipedia.org/wiki/Dolores_del_R%C3%ADo)
- 1985 Enver Hoxha, Albanian educator and politician, 21st Prime Minister of Albania (born 1908) [Wikipedia](https://en.wikipedia.org/wiki/Enver_Hoxha)
- 1987 Primo Levi, Italian chemist and author (born 1919) [Wikipedia](https://en.wikipedia.org/wiki/Primo_Levi)
- 1987 Erskine Caldwell, American novelist and short story writer (born 1903) [Wikipedia](https://en.wikipedia.org/wiki/Erskine_Caldwell)
- 2007 Kurt Vonnegut, American novelist, short story writer, and playwright (born 1922) [Wikipedia](https://en.wikipedia.org/wiki/Kurt_Vonnegut)
- 2012 Ahmed Ben Bella, Algerian soldier and politician, 1st President of Algeria (born 1916) [Wikipedia](https://en.wikipedia.org/wiki/Ahmed_Ben_Bella)
- 2013 Jonathan Winters, American comedian, actor and screenwriter (born 1925) [Wikipedia](https://en.wikipedia.org/wiki/Jonathan_Winters)
- 2020 John Horton Conway, English mathematician (born 1937) [Wikipedia](https://en.wikipedia.org/wiki/John_Horton_Conway)

## Holidays and observances

- Christian feast day: Antipas of Pergamum (Greek Orthodox Church) [Wikipedia](https://en.wikipedia.org/wiki/Antipas_of_Pergamum)
- Christian feast day: Barsanuphius [Wikipedia](https://en.wikipedia.org/wiki/Barsanuphius)
- Christian feast day: Elena Guerra [Wikipedia](https://en.wikipedia.org/wiki/Elena_Guerra)
- Christian feast day: Gemma Galgani [Wikipedia](https://en.wikipedia.org/wiki/Gemma_Galgani)
- Christian feast day: Blessed George Gervase [Wikipedia](https://en.wikipedia.org/wiki/George_Gervase)
- Christian feast day: Godeberta [Wikipedia](https://en.wikipedia.org/wiki/Godeberta)
- Christian feast day: Guthlac of Crowland [Wikipedia](https://en.wikipedia.org/wiki/Guthlac_of_Crowland)
- Christian feast day: George Selwyn (Anglicanism) [Wikipedia](https://en.wikipedia.org/wiki/George_Selwyn_(bishop_of_New_Zealand))
- Christian feast day: Stanislaus of Szczepanów [Wikipedia](https://en.wikipedia.org/wiki/Stanislaus_of_Szczepan%C3%B3w)
- Christian feast day: April 11 (Eastern Orthodox liturgics) [Wikipedia](https://en.wikipedia.org/wiki/April_11_(Eastern_Orthodox_liturgics))
- Juan Santamaría Day, anniversary of his death in the Second Battle of Rivas. (Costa Rica) [Wikipedia](https://en.wikipedia.org/wiki/Second_Battle_of_Rivas)
- International Louie Louie Day [Wikipedia](https://en.wikipedia.org/wiki/Louie_Louie)
- World Parkinson's Day [Wikipedia](https://en.wikipedia.org/wiki/Parkinson's_disease)

## Sources

- [Wikipedia — “April 11”](https://en.wikipedia.org/wiki/April_11) — events, births, deaths and observances (text under CC BY-SA 4.0) (checked 2026-10-15)
- [Wikipedia — “Selected anniversaries/April 11”](https://en.wikipedia.org/wiki/Wikipedia:Selected_anniversaries/April_11) — the anniversaries editors chose for the date and the article each one is about (checked 2026-10-15)
- [Wikidata](https://www.wikidata.org/) — in how many language editions each entry's own article exists, used to fill the lists (CC0) (checked 2026-10-15)
- [vacanza/holidays (open-source holiday rules, MIT licence)](https://github.com/vacanza/holidays) — holiday rules used to build the lists (checked 2026-10-15)

The events, births, deaths and observances above are from the English Wikipedia article [“April 11”](https://en.wikipedia.org/wiki/April_11) and the articles it links to ([authors and history](https://en.wikipedia.org/wiki/April_11?action=history)), retrieved 2026-10-15 through the Wikimedia “On this day” feed. They are licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/); this selection is shared under the same licence. Every anniversary that Wikipedia's editors selected for April 11 stays on the list; the remaining places, up to 27 events, 22 births and 14 deaths, go to the entries whose own article — about the event itself, or else the person or thing it is about — appears in the most language editions (counted from Wikidata); an article about a person or thing, which covers far more than one day, counts half. An entry with no article of its own counts, also at half, by the least covered article it links, and one that links only places counts for nothing. Each list runs by year, and the wording is unchanged apart from removing references to pictures, audio and video.

## April 11 in the calendar

| Year | Weekday | ISO week | Moon (UTC) |
| --- | --- | --- | --- |
| 2026 | Saturday | 2026-W15 | 🌘 Waning Crescent |
| 2027 | Sunday | 2027-W14 | 🌒 Waxing Crescent |
| 2028 | Tuesday | 2028-W15 | 🌖 Waning Gibbous |
| 2029 | Wednesday | 2029-W15 | 🌘 Waning Crescent |
| 2030 | Thursday | 2030-W15 | 🌓 First Quarter |

Moon phases are for the day in UTC; at the edges of a phase your local date can differ.

## Public holidays on April 11

None of the 28 countries we track has a public holiday on April 11 in 2026 or 2027.

[Today's holidays in 28 countries →](https://whathappen.today/holidays/)

## Nearby dates

[← April 10](https://whathappen.today/on-this-day/april-10/) · [April 12 →](https://whathappen.today/on-this-day/april-12/)

[All 366 days](https://whathappen.today/on-this-day/)

Last updated: 15 October 2026

---

Web page: https://whathappen.today/on-this-day/april-11/