På denne dag: 4. mai
Utforsk avgjørende hendelser, vitenskapelige sprang og historiske vendepunkter. Med kildekritisk merking for antikke og kalenderusatte datoer.
1493: Historisk hendelse
Pope Alexander VI (pictured) issued the papal bull Inter caetera, establishing a line of demarcation dividing the New World between Spain and Portugal.
1626: Historisk hendelse
Having been appointed the director-general of New Netherland, Peter Minuit arrived in Manhattan.
1677: Historisk hendelse
Trunajaya rebellion: Dutch East India Company forces under Cornelis Speelman began an attack on Surabaya, on the island of Java.
1776: Historisk hendelse
American Revolution: The Colony of Rhode Island and Providence Plantations became the first of the Thirteen Colonies to renounce its allegiance to the British Crown.
1789: Historisk hendelse
The Boydell Shakespeare Gallery, part of a cultural project initiated by engraver John Boydell, opened in London.
1886: Historisk hendelse
During a labor rally in Chicago, a bomb explosion and gunfire led to the deaths of eight police officers and four members of the public.
1919: Historisk hendelse
The May Fourth Movement began in China with large-scale student demonstrations in Tiananmen Square, Beijing.
1942: Historisk hendelse
World War II: Aircraft from Imperial Japanese Navy vessels attacked Allied naval forces, beginning the Battle of the Coral Sea, the first naval action in which the participating ships never sighted or fired directly at each other.
1974: Historisk hendelse
An all-female Japanese team reached the summit of Manaslu in the Himalayas, becoming the first women to climb a peak higher than 8,000 metres (26,247 ft) above sea level.
1979: Historisk hendelse
Margaret Thatcher became the first female prime minister of the United Kingdom.
1982: Historisk hendelse
Falklands War: HMS Sheffield was struck by an Exocet missile, killing 20 sailors and leading to its sinking six days later—the first Royal Navy ship sunk in action since World War II.
2000: Historisk hendelse
Ken Livingstone took office as the first mayor of London.
2015: Historisk hendelse
The Parliament of Malta moved from the Grandmaster's Palace to the purpose-built Parliament House (pictured).
2019: Historisk hendelse
The inaugural race of the W Series took place at Hockenheimring, Germany, and was won by Jamie Chadwick (pictured), who later became the season's champion.
🔍 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.