On this day: June 12

Events on June 12

• 1042 Constantine IX Monomachos is crowned as Byzantine Emperor, one day after his marriage to Empress Zoe Porphyrogenita. Wikipedia
• 1240 The Disputation of Paris, in which four rabbis defended the Talmud against Nicholas Donin's accusations of blasphemy, began in the court of King Louis IX. Wikipedia
• 1550 The city of Helsinki, Finland (belonging to Sweden at the time) is founded by King Gustav I of Sweden. Wikipedia
• 1775 Thomas Gage, the governor of the Province of Massachusetts Bay, offered a general pardon to colonists who remained loyal to Britain. Wikipedia
• 1776 The Fifth Virginia Convention adopted a declaration of rights, an influential document that proclaimed the inherent rights of men. Wikipedia
• 1798 Following the successful French invasion of Malta, the Knights Hospitaller surrendered Malta to Napoleon, initiating two years of occupation. Wikipedia
• 1864 Union general Ulysses S. Grant pulled his troops out of the Battle of Cold Harbor in Hanover County, Virginia, ending one of the bloodiest, most lopsided battles in the American Civil War. Wikipedia
• 1900 The Reichstag approves new legislation continuing Germany's naval expansion program, providing for construction of 38 battleships over a 20-year period. Germany's fleet would be the largest in the world. Wikipedia
• 1914 As part of the Ottoman Empire's policies of ethnic cleansing, Turkish irregulars began a six-day massacre in the predominantly Greek town of Phocaea. Wikipedia
• 1921 Soviet politician Vladimir Antonov-Ovseenko authorised the use of chemical weapons against a peasant rebellion in the Tambov Governorate. Wikipedia
• 1942 On her thirteenth birthday, Anne Frank began keeping a diary during the Nazi occupation of the Netherlands in World War II. Wikipedia
• 1954 Dominic Savio, who was 14 years old at his death in 1857, was canonized by Pope Pius XII, making him one of the youngest non-martyred saints in the Catholic Church. Wikipedia
• 1963 The premiere was held in New York of the historical drama film Cleopatra, the most expensive film made to that point. Wikipedia
• 1967 The U.S. Supreme Court struck down laws restricting interracial marriage in the landmark civil rights case Loving v. Virginia. Wikipedia
• 1978 American serial killer David Berkowitz, popularly known as the "Son of Sam", was sentenced to 25-years-to-life in prison for each of six killings. Wikipedia
• 1981 Raiders of the Lost Ark, the first film in the Indiana Jones franchise, was released. Wikipedia
• 1987 Cold War: During a speech at the Brandenburg Gate by the Berlin Wall, US president Ronald Reagan challenged Soviet leader Mikhail Gorbachev to "tear down this wall!". Wikipedia
• 1987 The Central African Republic's former emperor Jean-Bédel Bokassa is sentenced to death for crimes he had committed during his 13-year rule. Wikipedia
• 1991 More than 150 Sri Lankan Tamil civilians were massacred by members of the military in the village of Kokkadichcholai. Wikipedia
• 1994 The Boeing 777, the world's largest twinjet, made its maiden flight. Wikipedia
• 1999 In the aftermath of the bombing of Yugoslavia and the Kosovo War, the NATO-led Kosovo Force entered the territory with a mandate of establishing a secure environment. Wikipedia
• 2010 Sixteen-year-old Abby Sunderland was rescued after her boat was dismasted in the Indian Ocean while trying to become the youngest sailor around the world. Wikipedia
• 2016 An Islamic terrorist killed 49 people in a mass shooting at the gay nightclub Pulse in Orlando, Florida. Wikipedia
• 2018 United States President Donald Trump and Kim Jong-un of North Korea hold the first meeting between leaders of their two countries in Singapore. Wikipedia
• 2019 Kassym-Jomart Tokayev is inaugurated as the second president of Kazakhstan. Wikipedia
• 2025 Air India Flight 171 crashed shortly after take-off in Ahmedabad, India, killing 260 people. Wikipedia

Born on June 12

• 1802 Harriet Martineau, English sociologist and author (died 1876) Wikipedia
• 1819 Charles Kingsley, English priest, historian, and author (died 1875) Wikipedia
• 1827 Johanna Spyri, Swiss author, best known for Heidi (died 1901) Wikipedia
• 1890 Egon Schiele, Austrian soldier and painter (died 1918) Wikipedia
• 1892 Djuna Barnes, American novelist, journalist, and playwright (died 1982) Wikipedia
• 1897 Anthony Eden, English soldier and politician, Prime Minister of the United Kingdom (died 1977) Wikipedia
• 1899 Fritz Albert Lipmann, German-American biochemist and academic, Nobel Prize laureate (died 1986) Wikipedia
• 1908 Otto Skorzeny, German SS officer (died 1975) Wikipedia
• 1915 David Rockefeller, American banker and businessman (died 2017) Wikipedia
• 1924 George H. W. Bush, American lieutenant and politician, 41st President of the United States (died 2018) Wikipedia
• 1929 Anne Frank, German-Dutch diarist; victim of the Holocaust (died 1945) Wikipedia
• 1937 Vladimir Arnold, Russian-French mathematician and academic (died 2010) Wikipedia
• 1941 Chick Corea, American pianist and composer (died 2021) Wikipedia
• 1942 Bert Sakmann, German physiologist and biologist, Nobel Prize laureate Wikipedia
• 1962 Jordan Peterson, Canadian psychologist, professor and cultural critic Wikipedia
• 1979 Diego Milito, Argentine footballer Wikipedia
• 1981 Adriana Lima, Brazilian model and actress Wikipedia
• 1985 Dave Franco, American actor Wikipedia
• 1988 Eren Derdiyok, Swiss footballer Wikipedia
• 1988 Mauricio Isla, Chilean footballer Wikipedia
• 1992 Philippe Coutinho, Brazilian footballer Wikipedia
• 1996 Davinson Sánchez, Colombian footballer Wikipedia

Died on June 12

• 816 Pope Leo III (born 750) Wikipedia
• 1524 Diego Velázquez de Cuéllar, Spanish conquistador (born 1465) Wikipedia
• 1912 Frédéric Passy, French economist and academic, Nobel Prize laureate (born 1822) Wikipedia
• 1937 Mikhail Tukhachevsky, Russian general (born 1893) Wikipedia
• 1980 Masayoshi Ōhira, Japanese politician, 68th Prime minister of Japan (born 1910) Wikipedia
• 1982 Karl von Frisch, Austrian-German ethologist and academic, Nobel Prize laureate (born 1886) Wikipedia
• 1983 Norma Shearer, Canadian-American actress (born 1902) Wikipedia
• 1997 Bulat Okudzhava, Russian singer-songwriter and guitarist (born 1924) Wikipedia
• 2003 Gregory Peck, American actor and political activist (born 1916) Wikipedia
• 2006 György Ligeti, Romanian-Hungarian composer and educator (born 1923) Wikipedia
• 2012 Elinor Ostrom, American political scientist and economist, Nobel Prize laureate (born 1933) Wikipedia
• 2023 Silvio Berlusconi, Italian businessman and politician, Prime Minister of Italy (born 1936) Wikipedia
• 2023 Treat Williams, American actor (born 1951) Wikipedia
• 2024 Jerry West, American basketball player and executive (born 1938) Wikipedia

Holidays and observances

• Chaco Armistice Day (Paraguay) Wikipedia
• Christian feast day: 108 Martyrs of World War II Wikipedia
• Christian feast day: Basilides Wikipedia
• Christian feast day: Blessed Hildegard Burjan Wikipedia
• Christian feast day: Enmegahbowh (Episcopal Church) Wikipedia
• Christian feast day: Eskil Wikipedia
• Christian feast day: Blessed Florida Cevoli Wikipedia
• Christian feast day: First Ecumenical Council (Lutheran) Wikipedia
• Christian feast day: Gaspar Bertoni Wikipedia
• Christian feast day: Blessed Maria Candida of the Eucharist Wikipedia
• Christian feast day: Blessed Mercedes de Jesús Molina Wikipedia
• Christian feast day: Onuphrius Wikipedia
• Christian feast day: Pope Leo III Wikipedia
• Christian feast day: Ternan Wikipedia
• Christian feast day: June 12 (Eastern Orthodox liturgics) Wikipedia
• Dia dos Namorados (Brazil) Wikipedia
• Helsinki Day (Finland) Wikipedia
• Independence Day, celebrates the independence of the Philippines from Spain in 1898. Wikipedia
• June 12 Commemoration (Lagos State) Wikipedia
• Loving Day (United States) Wikipedia
• Russia Day (Russia) Wikipedia
• Women Veterans Recognition Day (United States) Wikipedia
• World Day Against Child Labour, and its related observances: Children's Day (Haiti) Wikipedia

Sources

• Wikipedia — “June 12” — events, births, deaths and observances (text under CC BY-SA 4.0) (checked 2026-10-15)
• Wikipedia — “Selected anniversaries/June 12” — the anniversaries editors chose for the date and the article each one is about (checked 2026-10-15)
• Wikidata — 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) — holiday rules used to build the lists (checked 2026-10-15)

The events, births, deaths and observances above are from the English Wikipedia article “June 12” and the articles it links to (authors and history), retrieved 2026-10-15 through the Wikimedia “On this day” feed. They are licensed under CC BY-SA 4.0; this selection is shared under the same licence. Every anniversary that Wikipedia's editors selected for June 12 stays on the list; the remaining places, up to 26 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.