On this day: July 20

Events on July 20

• 1715 Seventh Ottoman–Venetian War: The Ottoman Empire captures Nauplia, the capital of the Republic of Venice's "Kingdom of the Morea", thereby opening the way to the swift Ottoman reconquest of the Morea. Wikipedia
• 1807 Nicéphore Niépce is awarded a patent by Napoleon for the Pyréolophore, the world's first internal combustion engine, after it successfully powered a boat upstream on the river Saône in France. Wikipedia
• 1810 Citizens of Bogotá, New Granada declare independence from Spain. Wikipedia
• 1831 Seneca and Shawnee people agree to relinquish their land in western Ohio for 60,000 acres west of the Mississippi River. Wikipedia
• 1864 American Civil War: Battle of Peachtree Creek: Near Atlanta, Georgia, Confederate forces led by General John Bell Hood unsuccessfully attack Union troops under General William T. Sherman. Wikipedia
• 1885 The Football Association legalizes professionalism in association football under pressure from the British Football Association. Wikipedia
• 1906 In Finland, a new electoral law is ratified, guaranteeing the country the first and equal right to vote in the world. Finnish women are the first in Europe to receive the right to vote. Wikipedia
• 1917 World War I: The Corfu Declaration, which leads to the creation of the post-war Kingdom of Yugoslavia, is signed by the Yugoslav Committee and Kingdom of Serbia. Wikipedia
• 1920 The Greek Army takes control of Silivri after Greece is awarded the city by the Paris Peace Conference; by 1923 Greece effectively lost control to the Turks. Wikipedia
• 1935 Switzerland: A Royal Dutch Airlines plane en route from Milan to Frankfurt crashes into a Swiss mountain, killing thirteen. Wikipedia
• 1936 The Montreux Convention is signed in Switzerland, authorizing Turkey to fortify the Dardanelles and Bosphorus but guaranteeing free passage to ships of all nations in peacetime. Wikipedia
• 1938 The United States Department of Justice files suit in New York City against the motion picture industry charging violations of the Sherman Antitrust Act in regards to the studio system. The case would eventually result in a break-up of the industry in 1948. Wikipedia
• 1940 California opens its first freeway, the Arroyo Seco Parkway. Wikipedia
• 1941 Soviet leader Joseph Stalin consolidates the Commissariats of Home Affairs and National Security to form the NKVD and names Lavrentiy Beria its chief. Wikipedia
• 1944 World War II: Adolf Hitler survives an assassination attempt led by German Army Colonel Claus von Stauffenberg. Wikipedia
• 1950 Cold War: In Philadelphia, Harry Gold pleads guilty to spying for the Soviet Union by passing secrets from atomic scientist Klaus Fuchs. Wikipedia
• 1951 King Abdullah I of Jordan is assassinated by a Palestinian while attending Friday prayers in Jerusalem. Wikipedia
• 1961 French military forces break the Tunisian siege of Bizerte. Wikipedia
• 1969 Apollo program: Apollo 11's crew successfully makes the first human landing on the Moon in the Sea of Tranquility. Americans Neil Armstrong and Buzz Aldrin become the first humans to walk on the Moon six and a half hours later. Wikipedia
• 1969 A cease fire is announced between Honduras and El Salvador, six days after the beginning of the "Football War". Wikipedia
• 1969 The Apollo 11 Lunar Module Eagle landed on the Sea of Tranquillity, where Neil Armstrong and Buzz Aldrin became the first men to walk on the Moon six and a half hours later (bootprint pictured). Wikipedia
• 1974 Turkish invasion of Cyprus: Forces from Turkey invade Cyprus after a coup d'état, organized by the dictator of Greece, against president Makarios. Wikipedia
• 1976 The Viking 1 lander became the first spacecraft to successfully land on Mars and perform its mission. Wikipedia
• 1976 The American Viking 1 lander successfully lands on Mars. Wikipedia
• 1989 Burma's ruling junta puts opposition leader Aung San Suu Kyi under house arrest. Wikipedia
• 2015 The United States and Cuba resume full diplomatic relations after five decades. Wikipedia

Born on July 20

• 1304 Petrarch, Italian poet and scholar (died 1374) Wikipedia
• 1519 Pope Innocent IX (died 1591) Wikipedia
• 1789 Mahmud II, Ottoman sultan (died 1839) Wikipedia
• 1804 Richard Owen, English biologist, anatomist, and paleontologist (died 1892) Wikipedia
• 1822 Gregor Mendel, Austro-German monk, geneticist and botanist (died 1884) Wikipedia
• 1864 Erik Axel Karlfeldt, Swedish poet, Nobel Prize laureate (died 1931) Wikipedia
• 1889 John Reith, 1st Baron Reith, Scottish broadcaster, co-founded BBC (died 1971) Wikipedia
• 1897 Tadeusz Reichstein, Polish-Swiss chemist and academic, Nobel Prize laureate (died 1996) Wikipedia
• 1919 Edmund Hillary, New Zealand mountaineer and explorer (died 2008) Wikipedia
• 1925 Frantz Fanon, French–Algerian psychiatrist and philosopher (died 1961) Wikipedia
• 1925 Jacques Delors, French economist and politician, 8th President of the European Commission (died 2023) Wikipedia
• 1933 Cormac McCarthy, American novelist, playwright, and screenwriter (died 2023) Wikipedia
• 1938 Natalie Wood, American actress (died 1981) Wikipedia
• 1938 Diana Rigg, English actress (died 2020) Wikipedia
• 1947 Gerd Binnig, German physicist and academic, Nobel Prize laureate Wikipedia
• 1947 Carlos Santana, Mexican-American singer-songwriter and guitarist Wikipedia
• 1962 Carlos Alazraqui, American actor, producer, and screenwriter Wikipedia
• 1964 Chris Cornell, American singer-songwriter and guitarist (died 2017) Wikipedia
• 1966 Enrique Peña Nieto, Mexican lawyer and politician, 57th President of Mexico Wikipedia
• 1973 Haakon VIII of Norway Wikipedia
• 1977 Alessandro Santos, Brazilian-Japanese footballer Wikipedia
• 1980 Gisele Bündchen, Brazilian model, fashionista, and businesswoman Wikipedia

Died on July 20

• 1031 Robert II, king of France (born 972) Wikipedia
• 1816 Gavrila Derzhavin, Russian poet and politician (born 1743) Wikipedia
• 1866 Bernhard Riemann, German mathematician and academic (born 1826) Wikipedia
• 1903 Leo XIII, pope of the Catholic Church (born 1810) Wikipedia
• 1922 Andrey Markov, Russian mathematician and theorist (born 1856) Wikipedia
• 1923 Pancho Villa, Mexican general and politician, Governor of Chihuahua (born 1878) Wikipedia
• 1926 Felix Dzerzhinsky, Soviet educator and politician of Belarusian origin (born 1877) Wikipedia
• 1927 Ferdinand I, king of Romania (born 1865) Wikipedia
• 1937 Guglielmo Marconi, Italian physicist and engineer, Nobel Prize laureate (born 1874) Wikipedia
• 1945 Paul Valéry, French author and poet (born 1871) Wikipedia
• 1951 Abdullah I, king of Jordan (born 1882) Wikipedia
• 1973 Bruce Lee, American actor and martial artist (born 1940) Wikipedia
• 1992 Bruce Conde, American US army officer, stamp collector, and royalist mercenary general in the North Yemen civil war. Wikipedia
• 2017 Chester Bennington, American singer (born 1976) Wikipedia

Holidays and observances

• Birthday of Crown Prince Haakon Magnus (Norway) Wikipedia
• Christian feast day: Ansegisus Wikipedia
• Christian feast day: Apollinaris of Ravenna Wikipedia
• Christian feast day: Aurelius of Carthage Wikipedia
• Christian feast day: Elijah Wikipedia
• Christian feast day: Elizabeth Cady Stanton, Amelia Bloomer, Sojourner Truth, and Harriet Ross Tubman (Episcopal Church (USA)) Wikipedia
• Christian feast day: Frumentius Wikipedia
• Christian feast day: Giuseppe Beotti Wikipedia
• Christian feast day: John Baptist Yi (one of The Korean Martyrs) Wikipedia
• Christian feast day: Margaret the Virgin Wikipedia
• Christian feast day: Rita Josefa Pujalte Sánchez Wikipedia
• Christian feast day: Thorlac (relic translation) Wikipedia
• Christian feast day: Wilgefortis Wikipedia
• Christian feast day: July 20 (Eastern Orthodox liturgics) Wikipedia
• Día del Amigo (Argentina, Brazil) Wikipedia
• Engineer's Day (Costa Rica) Wikipedia
• Independence Day, celebrates the independence declaration of Colombia from Spain in 1810. Wikipedia
• International Chess Day Wikipedia
• Lempira Day (Honduras) Wikipedia

The events, births, deaths and observances above are from the English Wikipedia article “July 20” and the articles it links to (authors and history), retrieved 2026-10-09 through the Wikimedia “On this day” feed. They are licensed under CC BY-SA 4.0; this selection is shared under the same licence. We picked the 26 events, 22 births and 14 deaths with the widest coverage across Wikipedia's language editions (counted from Wikidata) and sorted them by year; the wording is unchanged apart from removing references to pictures.