På denne dag: 15. april
Utforsk avgjørende hendelser, vitenskapelige sprang og historiske vendepunkter. Med kildekritisk merking for antikke og kalenderusatte datoer.
769: Historisk hendelse
The final session of the Lateran Council, convened to rectify abuses in the papal electoral process that had led to the elevation of the antipopes Constantine II and Philip, was held in Rome.
1071: Historisk hendelse
Byzantine–Norman wars: After a siege of almost three years, Italo-Norman forces conquered the city of Bari, the capital of the Catepanate of Italy, ending more than five centuries of Byzantine presence in the region.
1191: Historisk hendelse
Henry VI, King of Germany (pictured), was crowned Holy Roman Emperor.
1632: Historisk hendelse
Thirty Years' War: A Swedish–German army defeated the forces of the Catholic League at the Battle of Rain, mortally wounding their commander Johann Tserclaes, Count of Tilly.
1738: Historisk hendelse
Serse, an opera by Baroque composer George Frideric Handel loosely based on Xerxes I of Persia, premiered in London.
1755: Historisk hendelse
A Dictionary of the English Language by Samuel Johnson was first published, becoming one of the most influential dictionaries in the history of English.
1802: Historisk hendelse
English poet William Wordsworth and his sister Dorothy encountered a "long belt" of daffodils near Ullswater, inspiring him to pen his best-known work, "I Wandered Lonely as a Cloud".
1912: Historisk hendelse
More than 1,500 people on the Titanic died when the passenger liner sank after colliding with an iceberg southeast of Newfoundland.
1922: Historisk hendelse
U.S. senator John B. Kendrick introduced a resolution calling for an investigation of a secret land deal involving U.S. president Warren G. Harding's administration, leading to the Teapot Dome scandal.
1923: Historisk hendelse
Ten Japanese-American children were killed in a racially motivated arson attack on a school in Sacramento, California.
1927: Historisk hendelse
Torrential rains caused the Mississippi River to break out of its levee system in at least 145 places, resulting in the worst flooding in the history of the United States.
1936: Historisk hendelse
Two Jews were killed near Tulkarm in Mandatory Palestine, an act widely viewed as the beginning of violence within the Arab revolt.
1936: Historisk hendelse
The Great Arab Revolt in the British Mandate for Palestine began when unknown assailants attacked a convoy of trucks and killed two of the Jewish drivers.
1947: Historisk hendelse
Jackie Robinson, the first African American to break the baseball color line, played his first game in Major League Baseball.
1952: Historisk hendelse
The Boeing B-52 Stratofortress, a long-range, subsonic, jet-powered, strategic bomber operated by the U.S. Air Force for most of the aircraft's history, made its first flight.
1955: Historisk hendelse
American restaurateur Ray Kroc opened the ninth McDonald's franchise in Des Plaines, Illinois, an occasion considered to be the founding of the present corporation.
1957: Historisk hendelse
The Indiaman departed Victoria Coach Station, London, as part of the first UK–India bus service.
1958: Historisk hendelse
On Walter O'Malley's initiative, the Los Angeles Dodgers and San Francisco Giants played the first Major League Baseball game on the U.S. West Coast.
1989: Historisk hendelse
The Hillsborough disaster, a human crush that caused 97 deaths in the worst disaster in British sporting history, occurred during an FA Cup match between Liverpool and Nottingham Forest in Sheffield.
1989: Historisk hendelse
The death of former Chinese General Secretary Hu Yaobang triggered a series of events that led to the Tiananmen Square protests in Beijing.
1994: Historisk hendelse
At a GATT ministerial meeting in Marrakesh, Morocco, representatives of 123 countries and the European Communities signed an agreement to establish the World Trade Organization.
2002: Historisk hendelse
Air China Flight 129 crashed on approach to Gimhae International Airport in Busan, South Korea, killing 129 people.
2013: Historisk hendelse
Dzhokhar and Tamerlan Tsarnaev set off two pressure cooker bombs during the running of the Boston Marathon, killing three people and injuring 264 others.
2019: Historisk hendelse
A fire severely damaged Notre-Dame de Paris, destroying the cathedral's timber spire and much of the roof.
2021: Historisk hendelse
A mass shooting at a FedEx Ground facility in Indianapolis, Indiana, killed nine and injured seven.
🔍 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.