På denne dag: 30. april
Utforsk avgjørende hendelser, vitenskapelige sprang og historiske vendepunkter. Med kildekritisk merking for antikke og kalenderusatte datoer.
311: Historisk hendelse
The Diocletianic Persecution of Christians officially ended in the eastern Roman Empire.
313: Historisk hendelse
Civil wars of the Tetrarchy: An outnumbered army led by Roman emperor Licinius defeated his rival Maximinus II's forces at the Battle of Tzirallum.
1006: Historisk hendelse
SN 1006, the brightest supernova in recorded history, first appeared in the constellation Lupus.
1789: Historisk hendelse
George Washington (pictured) took the oath of office as the first president of the United States at Federal Hall in New York City.
1803: Historisk hendelse
The United States purchased France's claim to the Louisiana Territory for 80 million francs, or less than US$.03 per acre ($.07/ha).
1883: Historisk hendelse
New York governor Grover Cleveland signed legislation that led to the creation of Niagara Falls State Park, the United States' first state park.
1894: Historisk hendelse
A crowd of workers, unemployed due to the Panic of 1893, concluded the first significant popular protest march on Washington D.C.
1897: Historisk hendelse
British physicist J. J. Thomson and his team announce the discovery of the electron.
1927: Historisk hendelse
The Federal Industrial Institute for Women opened near Alderson, West Virginia, as the first federal prison for women in the United States.
1927: Historisk hendelse
Douglas Fairbanks and Mary Pickford became the first two celebrities to make imprints of their hands and feet in cement at Grauman's Chinese Theatre in Hollywood, California.
1943: Historisk hendelse
Second World War: The Royal Navy submarine HMS Seraph began Operation Mincemeat to deceive Germany about the upcoming invasion of Sicily.
1945: Historisk hendelse
World War II: As Allied forces closed in on Berlin, Nazi leader Adolf Hitler committed suicide in the Führerbunker with Eva Braun one day after their marriage.
1963: Historisk hendelse
A refusal by the Bristol Omnibus Company and the Transport and General Workers' Union to permit the employment of black bus crews led to a bus boycott in Bristol, England.
1975: Historisk hendelse
American forces completed a helicopter evacuation of U.S. citizens, South Vietnamese civilians and others from Saigon, just before North Vietnamese troops captured the city and ended the Vietnam War.
1982: Historisk hendelse
Sixteen monks and a nun of the Hindu organisation Ananda Marga were beaten to death and set on fire in Calcutta, India.
1994: Historisk hendelse
Riverdance was performed for the first time, as the interval act for the Eurovision Song Contest.
2000: Historisk hendelse
Faustina Kowalska, a Polish nun whose apparitions of Jesus inspired the Catholic devotion to the Divine Mercy, was canonized by Pope John Paul II.
2004: Historisk hendelse
The New Yorker published an online article and photographs detailing accounts of torture and abuse by American military personnel of Iraqi prisoners held at Abu Ghraib prison in Baghdad.
2009: Historisk hendelse
A Dutch man drove his car at high speed into a parade in an attempt to kill the Dutch royal family.
2014: Historisk hendelse
A bomb blast in Ürümqi, China, killed three people and injured 79 others.
2021: Historisk hendelse
A crowd crush killed 45 people during the annual pilgrimage to the tomb of Rabbi Shimon bar Yochai in Israel.
🔍 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.