På denne dag: 20. februar
Utforsk avgjørende hendelser, vitenskapelige sprang og historiske vendepunkter. Med kildekritisk merking for antikke og kalenderusatte datoer.
1685: Historisk hendelse
The French colonization of Texas began with the landing of colonists led by Robert de La Salle near Matagorda Bay.
1816: Historisk hendelse
The Barber of Seville, an opera buffa composed by Gioachino Rossini, premiered at the Teatro Argentina in Rome to jeers from the audience.
1835: Historisk hendelse
An earthquake registering approximately 8.5 Mw devastated Concepción, Chile, and triggered a tsunami that destroyed neighbouring Talcahuano.
1846: Historisk hendelse
Polish insurgents in the Free City of Kraków led an uprising (depicted) attempting to incite a fight for national independence that was put down by the Austrian Empire nine days later.
1864: Historisk hendelse
American Civil War: The Union Army suffered a one-in-three casualty rate at the Battle of Olustee near Lake City, Florida.
1872: Historisk hendelse
The Metropolitan Museum of Art , today the largest art museum in the United States with a collection of more than two million works, opened in New York.
1931: Historisk hendelse
Paraguayan anarchists briefly seized the city of Encarnación as part of a larger plan to initiate a social revolution in the country.
1943: Historisk hendelse
A fissure opened in a cornfield in the Mexican state of Michoacán and continued to erupt for nine years, forming the cinder cone Parícutin .
1943: Historisk hendelse
The Saturday Evening Post published the first of Norman Rockwell's Four Freedoms, among the most widely distributed paintings ever produced, in support of U.S. president Franklin D. Roosevelt's Four Freedoms.
1959: Historisk hendelse
Canadian prime minister John Diefenbaker cancelled the Avro CF-105 Arrow (pictured) interceptor-aircraft program amid much political debate.
1962: Historisk hendelse
The Project Mercury stamp, designed by Charles R. Chickering, was released to commemorate the successful space flight of Colonel John Glenn.
1965: Historisk hendelse
The NASA spacecraft Ranger 8 spacecraft transmitted 7,137 photographs of the Moon in the final 23 minutes of its mission before crashing as planned into Mare Tranquillitatis.
1970: Historisk hendelse
Wat Phra Dhammakaya, one of the largest Buddhist temples in Thailand, was founded in Pathum Thani.
1988: Historisk hendelse
The Nagorno-Karabakh Autonomous Oblast voted to secede from Azerbaijan and join Armenia, triggering the First Nagorno-Karabakh War.
1992: Historisk hendelse
Appearing on the talk show Larry King Live, U.S. industrialist Ross Perot announced that he would begin a presidential campaign if "ordinary people" wanted him to run for office.
1998: Historisk hendelse
At the age of 15, American figure skater Tara Lipinski became the then-youngest winner of an Olympic gold medal in the history of the Winter Olympic Games.
2009: Historisk hendelse
The Tamil Tigers attempted to crash two aircraft laden with C-4 in suicide attacks on Colombo, Sri Lanka, but the planes were shot down before they reached their targets.
2010: Historisk hendelse
Severe flooding and mudslides on the island of Madeira, Portugal, killed 51 people.
🔍 Om kildene og historisk datering
Å tidfeste hendelser tusenvis av år tilbake i tid er en krevende historievitenskapelig oppgave. Før innføringen av den julianske kalenderen (45 f.Kr.) og den gregorianske kalenderen (1582) benyttet ulike sivilisasjoner (romere, grekere, kinesere, babylonere) vidt forskjellige kalendersystemer basert på månesykluser eller lokale embetsperioder.
Slik merker vi dateringene:
• ✓ Sikker datering: Dokumentert i samtidige protokoller, offisielle traktater eller etter standardiserte kalendersystemer.
• ⚠️ Usikker / estimert: Hendelsen er historisk reell, men datoen er tradisjonell, basert på senere krøniker eller lunisolare omregninger.
- Wikimedia Foundation – Wikipedia On This Day arkiver og historiske registre.
- Store norske leksikon (SNL) – Norsk og internasjonal historie, biografier og årstallsverifisering.
- Encyclopædia Britannica – Verifisering av antikke slag, fredsavtaler og statsdannelser.
- NASA Historical Logs & Science Missions – Romfartshistoriske datoer og oppskytningstelemetri.