På denne dag: 1. mai
Utforsk avgjørende hendelser, vitenskapelige sprang og historiske vendepunkter. Med kildekritisk merking for antikke og kalenderusatte datoer.
305: Historisk hendelse
Diocletian and Maximian retired as co-rulers of the Roman Empire, being succeeded by Galerius and Constantius Chlorus.
880: Historisk hendelse
The Nea Ekklesia church in Constantinople, on which many later cross-in-square Eastern Orthodox churches were based, was consecrated.
1169: Historisk hendelse
Norman mercenaries landed at Bannow Bay in Leinster, beginning the Norman invasion of Ireland.
1576: Historisk hendelse
Stephen Báthory and Anna Jagiellon were crowned as the elected rulers of the Polish–Lithuanian Commonwealth.
1625: Historisk hendelse
Dutch–Portuguese War: Portuguese and Spanish forces recaptured the Brazilian city of Bahia, which had previously been captured by the Dutch Republic.
1699: Historisk hendelse
Francis Nicholson and James Blair organize five May Day orations given by students of the College of William & Mary, leading to the establishment of Williamsburg as Virginia's new capital.
1707: Historisk hendelse
Under the terms of the Acts of Union, the Kingdoms of England and Scotland merged to form the Kingdom of Great Britain, with a single parliament and government based in Westminster.
1786: Historisk hendelse
The Marriage of Figaro (audio featured), an opera buffa by Wolfgang Amadeus Mozart, premiered at the Burgtheater in Vienna.
1794: Historisk hendelse
War of the Pyrenees: France regained nearly all the land it lost to Spain the previous year with its victory in the Second Battle of Boulou.
1884: Historisk hendelse
Moses Fleetwood Walker (pictured), the last African American in Major League Baseball until Jackie Robinson, played his first game for the Toledo Blue Stockings.
1885: Historisk hendelse
The original Chicago Board of Trade Building opened for business.
1897: Historisk hendelse
The Ramakrishna Mission was founded by Swami Vivekananda to serve as the humanitarian counterpart to the Hindu monastic order Ramakrishna Math.
1900: Historisk hendelse
A dust explosion at a coal mine near Scofield, Utah, U.S., killed at least 200 miners.
1931: Historisk hendelse
New York City's Empire State Building (pictured), at the time the tallest building in the world, opened.
1941: Historisk hendelse
Citizen Kane, a widely acclaimed film by actor and director Orson Welles, premiered.
1945: Historisk hendelse
Second World War: British and Indian forces conducted a successful airborne assault on a Japanese artillery battery during the advance to liberate Rangoon, Burma.
1947: Historisk hendelse
Sicilian separatist Salvatore Giuliano and his gang fired into a crowd of May Day marchers near Piana degli Albanesi, Sicily, killing 11 and wounding 33.
1950: Historisk hendelse
Gwendolyn Brooks became the first African American to receive the Pulitzer Prize for Poetry.
1974: Historisk hendelse
Argentine president Juan Perón expelled Montoneros from a demonstration in the Plaza de Mayo in Buenos Aires, forcing the group to become a clandestine organization.
1991: Historisk hendelse
In Major League Baseball, Rickey Henderson broke the record for stolen bases on the same night that Nolan Ryan broke his own record for no-hitters.
2002: Historisk hendelse
The Horncastle boar's head (pictured), which probably once formed part of the crest of an Anglo-Saxon helmet, was found.
2010: Historisk hendelse
Faisal Shahzad attempted to detonate a car bomb in Times Square, New York City, but it failed to explode.
2016: Historisk hendelse
The evacuation of nearly 88,000 people began when a wildfire swept through Fort McMurray, Alberta, Canada, and burned for another 14 months, becoming the costliest disaster in Canadian history.
🔍 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.