Organizando lo último de hoy
Un día como hoy
Efemérides, aniversarios y eventos históricos que marcaron el mundo. Cada día, una pieza para entender qué pasó tal día como hoy.
Latest articles in Un día como hoy
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20/04/2026Un día como hoy en 1995: The first planet orbiting another sun, 51 Pegasi b, is discovered
The first planet orbiting another sun, 51 Pegasi b, is discovered. 51 Pegasi b, officially named Dimidium, is an extrasolar planet approximately 50 light-years away in the constellation of Pegasus. It was the first exoplanet to be discovered orbiting a main-sequence star, the Sun-like 51 Pegasi, an
María González
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20/04/2026Un día como hoy en 1973: Skylab, the United States' first space station, is launched
Skylab, the United States' first space station, is launched. Skylab was the United States' first space station, launched by NASA, occupied for about 24 weeks between May 1973 and February 1974. It was operated by three trios of astronaut crews: Skylab 2, Skylab 3, and Skylab 4. Skylab was construct
María González
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20/04/2026Un día como hoy en 1991: Édith Cresson becomes France's first female Prime Minister
Édith Cresson becomes France's first female Prime Minister. Édith Jeanne Thérèse Cresson is a French politician of the Socialist Party. She served as Prime Minister of France from 1991 to 1992, the first woman to do so and only woman until Élisabeth Borne's appointment in 2022. Her political career
María González
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20/04/2026Un día como hoy en 1971: Soyuz 11 is launched. The mission ends in disaster when all three cosmonauts, Georgy Dobro
Soyuz 11 is launched. The mission ends in disaster when all three cosmonauts, Georgy Dobrovolsky, Vladislav Volkov, and Viktor Patsayev are suffocated by uncontrolled decompression of the capsule during re-entry on 29 June. Soyuz 11 was the only crewed mission to board the world's first space stati
María González
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20/04/2026Un día como hoy en 1984: Joe Kittinger completes the first solo balloon crossing of the Atlantic
Joe Kittinger completes the first solo balloon crossing of the Atlantic. Joseph William Kittinger II was an American military pilot who was an officer in the United States Air Force. He served from 1950 to 1978 and earned Command Pilot status before retiring with the rank of colonel. He held the wo
María González
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20/04/2026Un día como hoy en 1978: Japan's Naomi Uemura, travelling by dog sled, becomes the first person to reach the North
Japan's Naomi Uemura, travelling by dog sled, becomes the first person to reach the North Pole alone. Naomi Uemura was a Japanese adventurer who was known particularly for his solo exploits. For example, he was the first person to reach the North Pole solo, the first person to raft the Amazon Rive
María González
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20/04/2026Un día como hoy en 1973: Secretariat wins the 1973 Kentucky Derby in 1:59.4, an as-yet-unbeaten record
Secretariat wins the 1973 Kentucky Derby in 1:59.4, an as-yet-unbeaten record. Secretariat, also known as Big Red, was a champion American thoroughbred racehorse who was the ninth winner of the American Triple Crown, setting and still holding the fastest time record in all three of its constituent
María González
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20/04/2026Un día como hoy en 1939: The Sutton Hoo helmet is discovered
The Sutton Hoo helmet is discovered. The Sutton Hoo helmet is a decorated Anglo-Saxon helmet found during a 1939 excavation of the Sutton Hoo ship-burial. It was thought to be buried around the years c. 620–625 AD and is widely associated with an Anglo-Saxon leader, King Rædwald of East Anglia; its
María González
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20/04/2026Un día como hoy en 1982: Priscilla Presley opens Graceland to the public; the bathroom where Elvis Presley died fiv
Priscilla Presley opens Graceland to the public; the bathroom where Elvis Presley died five years earlier is kept off-limits. Priscilla Ann Presley is an American businesswoman and actress. She was married to singer Elvis Presley from 1967 to 1973. Presley co-founded and served as chair of Elvis Pr
María González
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20/04/2026Un día como hoy en 1979: Margaret Thatcher becomes the first female Prime Minister of the United Kingdom
Margaret Thatcher becomes the first female Prime Minister of the United Kingdom. Margaret Hilda Thatcher, Baroness Thatcher, was a British stateswoman who served as Prime Minister of the United Kingdom from 1979 to 1990 and Leader of the Conservative Party from 1975 to 1990. She was the longest-ser
María González
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20/04/2026Un día como hoy en 1963: Crown Colony of North Borneo (now Sabah) achieves self governance
Crown Colony of North Borneo (now Sabah) achieves self governance. The Crown Colony of North Borneo was a Crown colony on the island of Borneo established in 1946 shortly after the dissolution of the British Military Administration. The Crown Colony of Labuan joined the new Crown colony during its
María González
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20/04/2026Un día como hoy en 1995: The Bose–Einstein condensate is first created
The Bose–Einstein condensate is first created. In condensed matter physics, a Bose–Einstein condensate (BEC) is a state of matter that is typically formed when a gas of bosons at very low densities is cooled to temperatures very close to absolute zero, i.e. 0 K. Under such conditions, a large fract
María González
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20/04/2026Un día como hoy en 1992: Space Shuttle program: The Space Shuttle Endeavour is launched on its first mission, STS-4
Space Shuttle program: The Space Shuttle Endeavour is launched on its first mission, STS-49. The Space Shuttle program was the fourth human spaceflight program carried out by the U.S. National Aeronautics and Space Administration (NASA), which accomplished routine transportation for Earth-to-orbit
María González
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20/04/2026Un día como hoy en 1947: Saab produces its first automobile
Saab produces its first automobile. Saab Automobile AB was a car manufacturer that was founded in Sweden in 1945 when its parent company, Saab AB, began a project to design a small automobile. The first production model, the Saab 92, was launched in 1949. In 1968, the parent company merged with Sca
María González
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20/04/2026Un día como hoy en 1964: First ascent of Shishapangma, the fourteenth highest mountain in the world and the lowest
First ascent of Shishapangma, the fourteenth highest mountain in the world and the lowest of the Eight-thousanders. In mountaineering and climbing, a first ascent, is the first successful documented climb to the top of a mountain peak or the top of a particular climbing route. Early 20th-century mo
María González
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20/04/2026Un día como hoy en 1961: K-19, the first Soviet nuclear submarine equipped with nuclear missiles, is commissioned
K-19, the first Soviet nuclear submarine equipped with nuclear missiles, is commissioned. K-19 was the first submarine of the Project 658 class, the first generation of Soviet nuclear submarines equipped with nuclear ballistic missiles, specifically the R-13 SLBM. The boat was hastily built by the
María González
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20/04/2026Un día como hoy en 1979: Margaret Thatcher wins the United Kingdom general election. The following day, she becomes
Margaret Thatcher wins the United Kingdom general election. The following day, she becomes the first female British Prime Minister. Margaret Hilda Thatcher, Baroness Thatcher, was a British stateswoman who served as Prime Minister of the United Kingdom from 1979 to 1990 and Leader of the Conservati
María González
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20/04/2026Un día como hoy en 1960: More than 20 million viewers watch the first televised royal wedding when Princess Margare
More than 20 million viewers watch the first televised royal wedding when Princess Margaret marries Antony Armstrong-Jones at Westminster Abbey. The wedding of Princess Margaret and Antony Armstrong-Jones took place on Friday, 6 May 1960 at Westminster Abbey in London. Princess Margaret was the you
María González
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20/04/2026Un día como hoy en 1991: In modern Russia's first democratic election, Boris Yeltsin is elected as the President of
In modern Russia's first democratic election, Boris Yeltsin is elected as the President of Russia. Presidential elections were held in the Russian Soviet Federative Socialist Republic (RSFSR) on 12 June 1991. This was the first ever Russian presidential election. The election was held roughly three
María González
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20/04/2026Un día como hoy en 1978: The first ascent of Mount Everest without supplemental oxygen, by Reinhold Messner and Pet
The first ascent of Mount Everest without supplemental oxygen, by Reinhold Messner and Peter Habeler. Mount Everest is Earth's highest mountain above sea level. It lies in the Mahalangur Himal sub-range of the Himalayas and marks part of the China–Nepal border at its summit. Its height was most rec
María González
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20/04/2026Un día como hoy en 1994: Nelson Mandela is inaugurated as South Africa's first black president
Nelson Mandela is inaugurated as South Africa's first black president. Nelson Rolihlahla Mandela was a South African anti-apartheid activist and statesman who was the first president of South Africa from 1994 to 1999. He was the country's first Black head of state and the first elected in a fully r
María González
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20/04/2026Un día como hoy en 1991: Ötzi the Iceman is discovered in the Alps on the border between Italy and Austria
Ötzi the Iceman is discovered in the Alps on the border between Italy and Austria. Ötzi, also called The Iceman, Similaun man, or Tyrolean Iceman, is the natural mummy of a man who lived between 3350 and 3105 BC. Ötzi's remains were discovered on 19 September 1991, in the Ötztal Alps at the Austria
María González
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20/04/2026Un día como hoy en 1995: Alison Hargreaves, a 33-year-old British mother, becomes the first woman to ascend Everest
Alison Hargreaves, a 33-year-old British mother, becomes the first woman to ascend Everest without oxygen or the help of sherpas. Alison Jane Hargreaves was a British mountaineer. Her accomplishments included scaling Mount Everest alone, without supplementary oxygen or support from a Sherpa team, i
María González
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20/04/2026Un día como hoy en 1941: Konrad Zuse presents the Z3, the world's first working programmable, fully automatic compu
Konrad Zuse presents the Z3, the world's first working programmable, fully automatic computer, in Berlin. Konrad Ernst Otto Zuse was a German civil engineer, pioneering computer scientist, inventor and businessman. His greatest achievement was the world's first programmable computer; the functional
María González
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20/04/2026Un día como hoy en 1992: The Toronto Blue Jays become the first Major League Baseball team based outside the United
The Toronto Blue Jays become the first Major League Baseball team based outside the United States to win the World Series. The Toronto Blue Jays are a Canadian professional baseball team based in Toronto. The Blue Jays compete in Major League Baseball (MLB) as a member club of the American League (
María González
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20/04/2026Un día como hoy en 1969: The first permanent ARPANET link is established between UCLA and SRI
The first permanent ARPANET link is established between UCLA and SRI. The Advanced Research Projects Agency Network (ARPANET) was the first wide-area packet-switched network with distributed control and one of the first computer networks to implement the TCP/IP protocol suite. Both technologies bec
María González
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20/04/2026Un día como hoy en 1966: Lunar Orbiter 1 takes the first photograph of Earth from orbit around the Moon
Lunar Orbiter 1 takes the first photograph of Earth from orbit around the Moon. The 1966 Lunar Orbiter 1 robotic spacecraft mission, part of NASA's Lunar Orbiter program, was the first American spacecraft to orbit the Moon. It was designed primarily to photograph smooth areas of the lunar surface f
María González
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20/04/2026Un día como hoy en 1701: Great Peace of Montreal between New France and First Nations is signed
Great Peace of Montreal between New France and First Nations is signed. The Great Peace of Montreal was a peace treaty between New France and 39 First Nations of North America that ended the Beaver Wars. It was signed on August 4, 1701, by Louis-Hector de Callière, governor of New France, and 1300
María González
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20/04/2026Un día como hoy en 1994: South Africa begins its first multiracial election, which is won by Nelson Mandela's Afric
South Africa begins its first multiracial election, which is won by Nelson Mandela's African National Congress. South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. Its nine provinces are bounded to the south by 2,798 kilometres of coastline that stret
María González
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20/04/2026Un día como hoy en 1994: South African general election: The first democratic general election in South Africa, in
South African general election: The first democratic general election in South Africa, in which black citizens could vote. The Interim Constitution comes into force. General elections were held in South Africa between 26 and 29 April 1994. The elections were the first in South Africa in which citiz
María González
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20/04/2026Un día como hoy en 1963: The ship Bluenose II was launched in Lunenburg, Nova Scotia. The schooner is a major Canad
The ship Bluenose II was launched in Lunenburg, Nova Scotia. The schooner is a major Canadian symbol. Bluenose II is a replica of the fishing and racing schooner Bluenose, commissioned by Sidney Culverwell Oland and built in 1963 as a promotional yacht for Oland Brewery. Sidney Oland donated the sc
María González
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20/04/2026Un día como hoy en 1980: Cable News Network (CNN) begins broadcasting
Cable News Network (CNN) begins broadcasting. Cable News Network (CNN) is an American multinational news media company and the flagship namesake property of CNN Worldwide, a division of Warner Bros. Discovery (WBD). Founded on June 1, 1980, by American media proprietor Ted Turner and Reese Schonfel
María González
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20/04/2026Un día como hoy en 1949: Albert II, a rhesus monkey, rides a V-2 rocket to an altitude of 134 km (83 mi), thereby b
Albert II, a rhesus monkey, rides a V-2 rocket to an altitude of 134 km (83 mi), thereby becoming the first mammal and first monkey in space. Albert II was a male rhesus macaque monkey who was the first primate and first mammal to travel to outer space. He flew from Holloman Air Force Base in New M
María González
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20/04/2026Un día como hoy en 1958: The world's first nuclear submarine, the USS Nautilus, becomes the first vessel to complet
The world's first nuclear submarine, the USS Nautilus, becomes the first vessel to complete a submerged transit of the geographical North Pole. USS Nautilus (SSN-571) was the world's first nuclear-powered boat, nuclear-powered submarine, and the first submarine to complete a submerged transit of th
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20/04/2026Un día como hoy en 1487: Elizabeth of York is crowned Queen Consort of England
Elizabeth of York is crowned Queen Consort of England. Elizabeth of York was Queen of England from her marriage to King Henry VII on 18 January 1486 until she died in 1503. She was the daughter of King Edward IV and Elizabeth Woodville, and her marriage to Henry VII followed his victory at the Batt
María González
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20/04/2026Un día como hoy en 1919: The British airship R34 lands in Norfolk, England, completing the first airship return jou
The British airship R34 lands in Norfolk, England, completing the first airship return journey across the Atlantic in 182 hours of flight. An airship, dirigible balloon or dirigible is a type of aerostat (lighter-than-air) aircraft that can navigate through the air flying under its own power. Aeros
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20/04/2026Un día como hoy en 1991: Space Shuttle Discovery launches on STS-39, the first unclassified shuttle mission for the
Space Shuttle Discovery launches on STS-39, the first unclassified shuttle mission for the United States Department of Defense. Space Shuttle Discovery is a retired American Space Shuttle orbiter. The spaceplane was one of the orbiters from NASA's Space Shuttle program and the third of five fully o
María González
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20/04/2026Un día como hoy en 1993: Space Shuttle Endeavour is launched on STS-57 to retrieve the European Retrievable Carrier
Space Shuttle Endeavour is launched on STS-57 to retrieve the European Retrievable Carrier (EURECA) satellite. It is also the first shuttle mission to carry the Spacehab module. Space Shuttle Endeavour is a retired orbiter from NASA's Space Shuttle program and the fifth and final operational Shuttl
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20/04/2026Un día como hoy en 1980: Vigdís Finnbogadóttir is elected President of Iceland and becomes the world's first democr
Vigdís Finnbogadóttir is elected President of Iceland and becomes the world's first democratically elected female head of state. Vigdís Finnbogadóttir is an Icelandic politician and theatre director who was the fourth president of Iceland, serving from 1980 to 1996, the first woman to hold the pos
María González
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20/04/2026Un día como hoy en 1973: Greeks vote to abolish the monarchy, beginning the first period of the Metapolitefsi
Greeks vote to abolish the monarchy, beginning the first period of the Metapolitefsi. A constitutional referendum was held in Greece on 29 July 1973. The amendments would confirm the abolition of the monarchy by the military junta and establish a republic. The proposal was approved by 78.6% of vote
María González
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20/04/2026Un día como hoy en 1959: The Soviet probe Luna 3 transmits the first-ever photographs of the far side of the Moon
The Soviet probe Luna 3 transmits the first-ever photographs of the far side of the Moon. Luna 3, or E-2A No.1, was a Soviet spacecraft launched in 1959 as part of the Luna programme. It was the first mission to photograph the far side of the Moon and the third Soviet space probe to be sent to the
María González
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20/04/2026Un día como hoy en 1971: Apollo program: Launch of Apollo 15 on the first Apollo "J-Mission", and first use of a Lu
Apollo program: Launch of Apollo 15 on the first Apollo "J-Mission", and first use of a Lunar Roving Vehicle. The Apollo program, also known as Project Apollo, was the United States human spaceflight program led by NASA, which landed the first humans on the Moon in 1969. Apollo was conceived in 196
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20/04/2026Un día como hoy en 1971: Apollo program: On Apollo 15, David Scott and James Irwin in the Apollo Lunar Module Falco
Apollo program: On Apollo 15, David Scott and James Irwin in the Apollo Lunar Module Falcon land on the Moon with the first Lunar Rover. The Apollo program, also known as Project Apollo, was the United States human spaceflight program led by NASA, which landed the first humans on the Moon in 1969.
María González
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20/04/2026Un día como hoy en 1984: Operation Blue Star, a military offensive, is launched by the Indian government at Harmand
Operation Blue Star, a military offensive, is launched by the Indian government at Harmandir Sahib, also known as the Golden Temple, the holiest shrine for Sikhs, in Amritsar. The operation continues until June 6, with casualties, most of them civilians, in excess of 5,000. Operation Blue Star was
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20/04/2026Un día como hoy en 1986: The United States Navy aircraft carrier USS Enterprise becomes the first nuclear-powered a
The United States Navy aircraft carrier USS Enterprise becomes the first nuclear-powered aircraft carrier to transit the Suez Canal, navigating from the Red Sea to the Mediterranean Sea to relieve the USS Coral Sea. An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a
María González
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20/04/2026Un día como hoy en 1988: U.S. President Ronald Reagan begins his first visit to the Soviet Union when he arrives in
U.S. President Ronald Reagan begins his first visit to the Soviet Union when he arrives in Moscow for a superpower summit with the Soviet leader Mikhail Gorbachev. The president of the United States (POTUS) is the head of state and head of government of the United States. The president directs the
María González
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20/04/2026Un día como hoy en 1967: The U.S. Navy aircraft carrier USS John F. Kennedy is launched by Jacqueline Kennedy and h
The U.S. Navy aircraft carrier USS John F. Kennedy is launched by Jacqueline Kennedy and her daughter Caroline. USS John F. Kennedy, the only ship of her class, was an aircraft carrier, formerly of the United States Navy. Considered a supercarrier, she was a variant of the Kitty Hawk class, and the
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20/04/2026Un día como hoy en 1580: The Ostrog Bible, one of the early printed Bibles in a Slavic language, is published
The Ostrog Bible, one of the early printed Bibles in a Slavic language, is published. The Ostrog Bible was the first complete printed edition of the Bible in Church Slavonic, published in Ostrog in the Polish–Lithuanian Commonwealth by the printer Ivan Fyodorov in 1581 with the assistance of Konsta
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20/04/2026Un día como hoy en 1965: Pope Paul VI begins the first papal visit to the Americas
Pope Paul VI begins the first papal visit to the Americas. Pope Paul VI was head of the Catholic Church and sovereign of Vatican City from 21 June 1963 until his death on 6 August 1978. Succeeding John XXIII, he continued the Second Vatican Council, which he closed in 1965, implementing its numerou
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20/04/2026Un día como hoy en 1973: Mars 6 is launched from the USSR
Mars 6 is launched from the USSR. Mars 6, also known as 3MP No.50P was a Soviet spacecraft launched to explore Mars. A 3MP bus spacecraft launched as part of the Mars program, it consisted of a lander, and a coast stage with instruments to study Mars as it flew past.
María González
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