På denne dag: 26. april
Utforsk avgjørende hendelser, vitenskapelige sprang og historiske vendepunkter. Med kildekritisk merking for antikke og kalenderusatte datoer.
1478: Historisk hendelse
In a conspiracy to replace the Medici family as rulers of the Republic of Florence, the Pazzi family attacked Lorenzo de' Medici (pictured) and killed his brother Giuliano at Florence Cathedral.
1777: Historisk hendelse
American Revolutionary War: Sixteen-year-old Sybil Ludington allegedly rode forty miles (64 km) through the night to warn militiamen under her father Henry's command that British troops were planning to invade Danbury, Connecticut.
1803: Historisk hendelse
Thousands of meteor fragments fell over L'Aigle, France, becoming a milestone in the understanding of meteorites.
1865: Historisk hendelse
U.S. Army soldiers cornered and fatally shot John Wilkes Booth, the assassin of U.S. president Abraham Lincoln, ending a twelve-day manhunt.
1915: Historisk hendelse
First World War: Britain, France and Russia signed a secret treaty promising territory to Italy if it joined the war on their side.
1933: Historisk hendelse
The Gestapo, the official secret police force of Nazi Germany, was established.
1937: Historisk hendelse
Spanish Civil War: The Bombing of Guernica by the Condor Legion of the Luftwaffe resulted in a devastating firestorm that caused widespread destruction and civilian deaths and inspired one of Pablo Picasso's most famous paintings.
1941: Historisk hendelse
Boris Kidrič and Edvard Kardelj founded the Liberation Front of the Slovene Nation, the main anti-fascist Slovene civil-resistance and political organization during World War II.
1944: Historisk hendelse
World War II: U.S. Navy submarines began attacks on Japan's Take Ichi convoy as it sailed in waters between Taiwan and the Philippines, eventually sinking four vessels and killing more than 4,000 troops.
1958: Historisk hendelse
Service ended on the Baltimore and Ohio Railroad's Royal Blue Line, one of the first major electrified train lines in the U.S. (steam train pictured).
1964: Historisk hendelse
Tanganyika and Zanzibar merged to form Tanzania with Julius Nyerere as its first president.
1970: Historisk hendelse
The World Intellectual Property Organization (WIPO) came into being when the WIPO Convention entered into force.
1986: Historisk hendelse
The Chernobyl Nuclear Power Plant (pictured) near Chernobyl, Ukrainian SSR, suffered a steam explosion, resulting in a fire, a nuclear meltdown, and the evacuation and resettlement of over 336,000 people around Europe.
1989: Historisk hendelse
An editorial was published in the People's Daily denouncing the growing unrest in Tiananmen Square in Beijing which would remain contentious through the remainder of the protests.
1989: Historisk hendelse
A tornado struck the Manikganj District of Bangladesh and killed an estimated 1,300 people, making it the deadliest tornado in history.
1994: Historisk hendelse
Just before landing at Nagoya Airport, Japan, the copilot of China Airlines Flight 140 inadvertently triggered the takeoff/go-around switch, causing the aircraft to crash and killing 264 of the 271 people on board.
1999: Historisk hendelse
The CIH virus activated widely, damaging hundreds of thousands of computers and causing hundreds of millions of dollars in losses.
2002: Historisk hendelse
An expelled student murdered sixteen people and wounded seven others before committing suicide at the Gutenberg-Gymnasium Erfurt in Erfurt, Germany.
2007: Historisk hendelse
Controversy surrounding the relocation of the Bronze Soldier of Tallinn, a Soviet Red Army World War II memorial in Tallinn, Estonia, erupted into mass protests and riots.
2017: Historisk hendelse
The Shandong was launched for the People's Liberation Army Navy, China's first domestically built aircraft carrier.
🔍 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.