På denne dag: 12. april
Utforsk avgjørende hendelser, vitenskapelige sprang og historiske vendepunkter. Med kildekritisk merking for antikke og kalenderusatte datoer.
627: Historisk hendelse
King Edwin of Northumbria was baptised by Bishop Paulinus of York.
1204: Historisk hendelse
Troops of the Fourth Crusade entered Constantinople and began a sack of the city, temporarily dissolving the Byzantine Empire.
1776: Historisk hendelse
American Revolution: The North Carolina Provincial Congress passed the Halifax Resolves, the first official action in the American colonies calling for independence from Great Britain.
1807: Historisk hendelse
The Froberg mutiny of Greek and Albanian troops in British service ended with the explosion of the gunpowder magazine at Fort Ricasoli, Malta.
1822: Historisk hendelse
Greek War of Independence: Ottoman troops began a massacre of tens of thousands of Greeks (depicted) on the island of Chios.
1831: Historisk hendelse
The Broughton Suspension Bridge near Manchester, England, collapsed reportedly because of mechanical resonance induced by troops marching in step across it.
1861: Historisk hendelse
Confederate forces began a bombardment of Fort Sumter in the harbor of Charleston, South Carolina, starting the American Civil War.
1910: Historisk hendelse
SMS Zrínyi, one of the last pre-dreadnoughts built by the Austro-Hungarian Navy, was launched in Trieste.
1961: Historisk hendelse
Aboard Vostok 1, Soviet cosmonaut Yuri Gagarin performed the first human spaceflight, completing one orbit of Earth in 108 minutes.
1973: Historisk hendelse
About 1,700 gravediggers in New York City began a 12-week strike, causing a delay in the burial of roughly 1,400 bodies in the city.
1980: Historisk hendelse
Canadian athlete Terry Fox embarked on an east-to-west "Marathon of Hope" from St. John's, Newfoundland and Labrador, with a prosthetic leg to raise funds for cancer research.
1983: Historisk hendelse
Harold Washington was elected as the first African-American mayor of Chicago.
1993: Historisk hendelse
Bosnian War: NATO forces began Operation Deny Flight to enforce a no-fly zone over Bosnia and Herzegovina ordered by the United Nations Security Council.
1994: Historisk hendelse
Husband-and-wife law partners Laurence Canter and Martha Siegel posted the first massive commercial spam on Usenet.
2012: Historisk hendelse
The Guinea-Bissau military seized control in a coup amid a presidential election, later handing power to a transitional administration under Manuel Serifo Nhamadjo.
2013: Historisk hendelse
Four Chadian soldiers were killed in a suicide bombing by jihadist rebels in Kidal, Mali.
2014: Historisk hendelse
A fire broke out near Valparaíso, Chile, eventually destroying at least 2,500 homes and leaving approximately 11,000 people homeless (damage pictured).
🔍 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.