På denne dag: 20. september
Utforsk avgjørende hendelser, vitenskapelige sprang og historiske vendepunkter. Med kildekritisk merking for antikke og kalenderusatte datoer.
1066: Historisk hendelse
Harald III of Norway and his English ally Tostig Godwinson defeated the northern earls Edwin and Morcar at the Battle of Fulford near York.
1260: Historisk hendelse
The second of two major uprisings by the Old Prussians, a Baltic tribe, began against the Teutonic Knights.
1498: Historisk hendelse
A tsunami caused by the Meiō earthquake washed away the building housing the statue of the Great Buddha (pictured) at Kōtoku-in in Kamakura, Japan; the statue has since stood in the open air.
1498: Historisk hendelse
A tsunami caused by the Meiō earthquake washed away the building housing the statue of the Great Buddha (pictured) at Kōtoku-in in Kamakura, Japan; the statue has since stood in the open air.
1643: Historisk hendelse
First English Civil War: The First Battle of Newbury was fought in Berkshire; Parliamentarian forces were allowed to pass Royalist troops to retreat the next morning.
1697: Historisk hendelse
The first of a series of treaties comprising the Peace of Ryswick was signed between France and the Grand Alliance, ending the Nine Years' War.
1792: Historisk hendelse
The French Army achieved its first major victory of the War of the First Coalition at the Battle of Valmy.
1870: Historisk hendelse
The Bersaglieri entered Rome through the Porta Pia, ending the temporal power of the Pope and completing the unification of Italy.
1906: Historisk hendelse
The ocean liner RMS Mauretania, the largest and fastest ship in the world at the time, was launched in Tyneside, England.
1906: Historisk hendelse
The ocean liner RMS Mauretania, the largest and fastest ship in the world at the time, was launched in Tyneside, England.
1920: Historisk hendelse
Irish War of Independence: British auxiliary police officers known as Black and Tans went on a rampage in Balbriggan, burning more than fifty homes and businesses and killing two people.
1943: Historisk hendelse
World War II: Australian troops led by Gordon Grimsley King defeated Imperial Japanese forces at the Battle of Kaiapit in New Guinea.
1944: Historisk hendelse
Second World War: Allied forces captured San Marino from the German Army.
1944: Historisk hendelse
Second World War: Allied forces captured San Marino from the German Army.
1967: Historisk hendelse
Sweden, Norway, and Denmark submit the Greek case alleging human rights violations by the Greek junta.
1967: Historisk hendelse
L. Ron Hubbard, the founder of Scientology, announced the story of Xenu in a taped lecture sent to all Scientologists.
1971: Historisk hendelse
Hurricane Irene (satellite image pictured) moved into the Pacific Ocean from the Atlantic, making it the first actively tracked tropical cyclone to do so.
1973: Historisk hendelse
Billie Jean King defeated Bobby Riggs in straight sets at the Astrodome in Houston, Texas, in an internationally televised tennis match dubbed the "Battle of the Sexes".
1973: Historisk hendelse
Billie Jean King defeated Bobby Riggs in straight sets at the Astrodome in Houston, Texas, in an internationally televised tennis match dubbed the "Battle of the Sexes".
1977: Historisk hendelse
A series of celestial phenomena of disputed nature was observed in the western Soviet Union, Finland and Denmark.
1984: Historisk hendelse
The Cosby Show, which became one of three U.S. television shows to have the highest ratings five years in a row, premiered with its pilot episode.
1988: Historisk hendelse
British prime minister Margaret Thatcher gave a landmark speech at the Belfry of Bruges, Belgium, against federalism in the European Economic Community.
1997: Historisk hendelse
Hurricane Erika, the strongest and longest-lasting hurricane of the 1997 Atlantic hurricane season, dissipated after causing flooding and power outages throughout Puerto Rico.
2000: Historisk hendelse
The Real Irish Republican Army carried out a rocket-launcher attack on the MI6 headquarters in London, with no casualties and minimal damage recorded.
2008: Historisk hendelse
An explosive-laden truck detonated in front of the Marriott hotel in Islamabad, Pakistan, killing 54 people and injuring 266 others.
2011: Historisk hendelse
The United States military ended its "don't ask, don't tell" policy, consequently allowing gay and lesbian people to serve openly.
2011: Historisk hendelse
The United States military ended its "don't ask, don't tell" policy, consequently allowing gay and lesbian people to serve openly.
🔍 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.