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January–March

*
January 1 January 1 or 1 January is the first day of the year in the Gregorian Calendar. There are 364 days remaining until the end of the year (365 in leap years). This day is also known as New Year's Day since the day marks the beginning of the year. ...
**
Fisk University Fisk University is a private historically black liberal arts college in Nashville, Tennessee. It was founded in 1866 and its campus is a historic district listed on the National Register of Historic Places. In 1930, Fisk was the first Afric ...
, a historically black university, is established in
Nashville, Tennessee Nashville is the capital city of the U.S. state of Tennessee and the seat of Davidson County. With a population of 689,447 at the 2020 U.S. census, Nashville is the most populous city in the state, 21st most-populous city in the U.S., and t ...
. ** The last issue of the abolitionist magazine '' The Liberator'' is published. *
January 6 Events Pre-1600 * 1066 – Following the death of Edward the Confessor on the previous day, the Witan meets to confirm Harold Godwinson as the new King of England; Harold is crowned the same day, sparking a succession crisis that will ...
Ottoman troops clash with supporters of
Maronite The Maronites ( ar, الموارنة; syr, ܡܖ̈ܘܢܝܐ) are a Christian ethnoreligious group native to the Eastern Mediterranean and Levant region of the Middle East, whose members traditionally belong to the Maronite Church, with the largest ...
leader
Youssef Bey Karam Youssef Bey Karam (also Joseph Bey Karam) (May 15, 1823 – April 7, 1889) ( ar, يوسف بك كرم), was a Lebanese Maronite notable for fighting in the 1860 civil war and led a rebellion in 1866–1867 against the Ottoman Empire rule in M ...
, at St. Doumit in
Lebanon Lebanon ( , ar, لُبْنَان, translit=lubnān, ), officially the Republic of Lebanon () or the Lebanese Republic, is a country in Western Asia. It is located between Syria to Lebanon–Syria border, the north and east and Israel to Blue ...
; the Ottomans are defeated. *
January 12 Events Pre-1600 * 475 – Byzantine Emperor Zeno is forced to flee his capital at Constantinople, and his general, Basiliscus gains control of the empire. *1528 – Gustav I of Sweden is crowned King of Sweden, having already reig ...
** The ''
Royal Aeronautical Society The Royal Aeronautical Society, also known as the RAeS, is a British multi-disciplinary professional institution dedicated to the global aerospace community. Founded in 1866, it is the oldest aeronautical society in the world. Members, Fellows ...
'' is formed as ''The Aeronautical Society of Great Britain'' in
London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...
, the world's oldest such society. ** British auxiliary steamer sinks in a storm in the
Bay of Biscay The Bay of Biscay (), known in Spain as the Gulf of Biscay ( es, Golfo de Vizcaya, eu, Bizkaiko Golkoa), and in France and some border regions as the Gulf of Gascony (french: Golfe de Gascogne, oc, Golf de Gasconha, br, Pleg-mor Gwaskogn), ...
, on passage from the Thames to Australia, with the loss of 244 people, and only 19 survivors. *
January 18 Events Pre-1600 * 474 – Seven-year-old Leo II succeeds his maternal grandfather Leo I as Byzantine emperor. He dies ten months later. * 532 – Nika riots in Constantinople fail. * 1126 – Emperor Huizong abdicates the Chine ...
Wesley College, Melbourne Wesley College is an independent, co-educational, open-entry private school in Melbourne, Australia. Established in 1866, the college is the only school in Victoria to offer the International Baccalaureate (IB) from early childhood to Year 12. Th ...
, is established. *
January 26 Events Pre-1600 * 661 – The Rashidun Caliphate is effectively ended with the assassination of Ali, the last caliph. *1531 – The 6.4–7.1 Lisbon earthquake kills about thirty thousand people. *1564 – The Council of Trent ...
Volcanic eruption Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are ...
in the Santorini caldera begins. *
February 7 Events Pre-1600 * 457 – Leo I becomes the Eastern Roman emperor. * 987 – Bardas Phokas the Younger and Bardas Skleros, Byzantine generals of the military elite, begin a wide-scale rebellion against Emperor Basil II. * 1301 &nda ...
Battle of Abtao The Battle of Abtao was a naval battle fought on February 7, 1866, during the Chincha Islands War, between a Spanish squadron and a combined Peruvian-Chilean fleet, at the island of Abtao in the Gulf of Ancud near Chiloé Archipelago in south-c ...
: A Spanish naval squadron fights a combined
Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...
vian-
Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the eas ...
an fleet, at the island of Abtao, in the
Chiloé Archipelago The Chiloé Archipelago ( es, Archipiélago de Chiloé, , ) is a group of islands lying off the coast of Chile, in the Los Lagos Region. It is separated from mainland Chile by the Chacao Channel in the north, the Sea of Chiloé in the east an ...
of southern
Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the eas ...
. *
February 13 Events Pre-1600 * 962 – Emperor Otto I and Pope John XII co-sign the '' Diploma Ottonianum'', recognizing John as ruler of Rome. *1322 – The central tower of Ely Cathedral falls on the night of 12th–13th. * 1462 – T ...
– The first daylight
bank robbery Bank robbery is the criminal act of stealing from a bank, specifically while bank employees and customers are subjected to force, violence, or a threat of violence. This refers to robbery of a bank branch or teller, as opposed to other bank-ow ...
in United States history during peacetime takes place in
Liberty, Missouri Liberty is a city in and the county seat of Clay County, Missouri, United States and is a suburb of Kansas City, located in the Kansas City Metropolitan Area. As of the 2020 United States Census the population was 30,167. Liberty is home to W ...
. This is considered to be the first robbery committed by
Jesse James Jesse Woodson James (September 5, 1847April 3, 1882) was an American outlaw, bank and train robber, guerrilla and leader of the James–Younger Gang. Raised in the " Little Dixie" area of Western Missouri, James and his family maintained s ...
and his gang, although James's role is disputed. *
February 26 Events Pre-1600 * 747 BC – According to Ptolemy, the epoch (origin) of the Nabonassar Era began at noon on this date. Historians use this to establish the modern BC chronology for dating historic events. * 364 – Valentinian I is ...
– The Calaveras Skull is discovered in
California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the ...
. Purported to be evidence of humans in North America during the
Pliocene The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58hoax A hoax is a widely publicized falsehood so fashioned as to invite reflexive, unthinking acceptance by the greatest number of people of the most varied social identities and of the highest possible social pretensions to gull its victims into pu ...
. *
February 28 Events Pre-1600 * 202 BC – Liu Bang is enthroned as the Emperor of China, beginning four centuries of rule by the Han dynasty. * 870 – The Fourth Council of Constantinople closes. * 1525 – Aztec king Cuauhtémoc is execut ...
– The month concludes without having a full moon. *
March 13 Events Pre-1600 *624 – The Battle of Badr, the first major battle between the Muslims and Quraysh. * 1567 – The Battle of Oosterweel, traditionally regarded as the start of the Eighty Years' War. * 1591 – At the Battle of ...
– The
United States Congress The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives, and an upper body, the Senate. It meets in the U.S. Capitol in Washi ...
overwhelmingly passes the
Civil Rights Act of 1866 The Civil Rights Act of 1866 (, enacted April 9, 1866, reenacted 1870) was the first United States federal law to define citizenship and affirm that all citizens are equally protected by the law. It was mainly intended, in the wake of the Amer ...
, the first federal legislation to protect the rights of African-Americans; U.S. President
Andrew Johnson Andrew Johnson (December 29, 1808July 31, 1875) was the 17th president of the United States, serving from 1865 to 1869. He assumed the presidency as he was vice president at the time of the assassination of Abraham Lincoln. Johnson was a D ...
vetoes the bill on March 27, and Congress overrides the veto on April 9. *
March 31 Events Pre-1600 * 307 – After divorcing his wife Minervina, Constantine marries Fausta, daughter of the retired Roman emperor Maximian. *1146 – Bernard of Clairvaux preaches his famous sermon in a field at Vézelay, urging the nec ...
– A
total lunar eclipse A lunar eclipse occurs when the Moon moves into the Earth's shadow. Such alignment occurs during an eclipse season, approximately every six months, during the full moon phase, when the Moon's orbital plane is closest to the plane of the Earth' ...
occurs.


April–June

*
April 4 Events Pre-1600 *503 BC – Roman consul Agrippa Menenius Lanatus celebrates a triumph for a military victory over the Sabines. * 190 – Dong Zhuo has his troops evacuate the capital Luoyang and burn it to the ground. * 611 – ...
Alexander II of Russia Alexander II ( rus, Алекса́ндр II Никола́евич, Aleksándr II Nikoláyevich, p=ɐlʲɪˈksandr ftɐˈroj nʲɪkɐˈlajɪvʲɪtɕ; 29 April 181813 March 1881) was Emperor of Russia, King of Poland and Grand Duke of Fin ...
narrowly escapes an assassination attempt in the city of St Petersburg. * April 8 – The kingdoms of
Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...
and
Prussia Prussia, , Old Prussian: ''Prūsa'' or ''Prūsija'' was a German state on the southeast coast of the Baltic Sea. It formed the German Empire under Prussian rule when it united the German states in 1871. It was ''de facto'' dissolved by an ...
form an alliance against the
Austrian Empire The Austrian Empire (german: link=no, Kaiserthum Oesterreich, modern spelling , ) was a Central- Eastern European multinational great power from 1804 to 1867, created by proclamation out of the realms of the Habsburgs. During its existence ...
. *
April 10 Events Pre-1600 * 428 – Nestorius becomes the Patriarch of Constantinople. * 837 – Halley's Comet makes its closest approach to Earth at a distance equal to 0.0342 AU (5.1 million kilometres/3.2 million miles). *1407 ...
– The
American Society for the Prevention of Cruelty to Animals The American Society for the Prevention of Cruelty to Animals (ASPCA) is a non-profit organization dedicated to preventing animal cruelty. Based in New York City since its inception in 1866, the organization's mission is "to provide effective ...
(ASPCA) is founded in New York City by Henry Bergh. *
May 2 Events Pre-1600 *1194 – King Richard I of England gives Portsmouth its first Royal Charter. *1230 – William de Braose is hanged by Prince Llywelyn the Great. * 1536 – Anne Boleyn, Queen of England, is arrested and imprisone ...
Battle of Callao:
Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...
vian defenders fight the Spanish fleet. *
May 7 Events Pre-1600 * 351 – The Jewish revolt against Constantius Gallus breaks out after his arrival at Antioch. * 558 – In Constantinople, the dome of the Hagia Sophia collapses, twenty years after its construction. Justinian I imme ...
– Student Ferdinand Cohen-Blind makes a failed attempt to assassinate
Otto von Bismarck Otto, Prince of Bismarck, Count of Bismarck-Schönhausen, Duke of Lauenburg (, ; 1 April 1815 – 30 July 1898), born Otto Eduard Leopold von Bismarck, was a conservative German statesman and diplomat. From his origins in the upper class of ...
in
Unter den Linden Unter den Linden (, "under the Tilia, linden trees") is a boulevard in the central Mitte (locality), Mitte district of Berlin, the capital of Germany. Running from the City Palace, Berlin, City Palace to Brandenburg Gate, it is named after the l ...
in Berlin. *
May 10 Events Pre-1600 * 28 BC – A sunspot is observed by Han dynasty astronomers during the reign of Emperor Cheng of Han, one of the earliest dated sunspot observations in China. *1291 – Scottish nobles recognize the authority of E ...
– London bank
Overend, Gurney and Company Overend, Gurney & Company was a London wholesale discount bank, known as "the bankers' bank", which collapsed in 1866 owing about £11 million, equivalent to £ million in . The collapse of the institution triggered a banking panic. History Ear ...
collapses, precipitating
Panic of 1866 The Panic of 1866 was an international financial downturn that accompanied the failure of Overend, Gurney and Company in London, and the ''corso forzoso'' abandonment of the silver standard in Italy. In Britain, the economic impacts are held ...
. *
May 16 Events Pre-1600 * 946 – Emperor Suzaku abdicates the throne in favor of his brother Murakami who becomes the 62nd emperor of Japan. *1204 – Baldwin IX, Count of Flanders is crowned as the first Emperor of the Latin Empire. *1364 ...
– The
United States Congress The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives, and an upper body, the Senate. It meets in the U.S. Capitol in Washi ...
approves the minting of a nickel 5-cent coin (
nickel Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive but large pieces are slow ...
), eliminating its predecessor, the half dime. *
May 24 Events Pre-1600 * 919 – The nobles of Franconia and Saxony elect Henry the Fowler at the Imperial Diet in Fritzlar as king of the East Frankish Kingdom. *1218 – The Fifth Crusade leaves Acre for Egypt. * 1276 – Magnus La ...
Battle of Tuyutí The Battle of Tuyutí (Tuiuti in Portuguese) was a Paraguayan offensive in the Paraguayan War targeting the Triple Alliance encampment of Tuyutí. It is considered to be the bloodiest battle ever in South America. The result of the battle was an ...
: 32,000 soldiers of the Triple Alliance defeat 24,000 Paraguayan soldiers few miles north of the Paraná, Argentina, in the
Paraguayan War The Paraguayan War, also known as the War of the Triple Alliance, was a South American war that lasted from 1864 to 1870. It was fought between Paraguay and the Triple Alliance of Argentina, the Empire of Brazil, and Uruguay. It was the deadliest ...
, with 16,000 casualties. *
May 26 Events Pre-1600 * 17 – Germanicus celebrates a triumph in Rome for his victories over the Cherusci, Chatti, and other German tribes west of the Elbe. * 451 – Battle of Avarayr between Armenian rebels and the Sasanian Empire tak ...
– First production of the
comic opera Comic opera, sometimes known as light opera, is a sung dramatic work of a light or comic nature, usually with a happy ending and often including spoken dialogue. Forms of comic opera first developed in late 17th-century Italy. By the 1730s, a n ...
''
Cox and Box ''Cox and Box; or, The Long-Lost Brothers'', is a one-act comic opera with a libretto by F. C. Burnand and music by Arthur Sullivan, based on the 1847 farce '' Box and Cox'' by John Maddison Morton. It was Sullivan's first successful comic opera ...
'' by F. C. Burnand and
Arthur Sullivan Sir Arthur Seymour Sullivan (13 May 1842 – 22 November 1900) was an English composer. He is best known for 14 operatic collaborations with the dramatist W. S. Gilbert, including ''H.M.S. Pinafore'', '' The Pirates of Penzance ...
at Moray Lodge, Kensington *
May 30 Events Pre-1600 * 70 – Siege of Jerusalem: Titus and his Roman legions breach the Second Wall of Jerusalem. Jewish defenders retreat to the First Wall. The Romans build a circumvallation, cutting down all trees within fifteen kilometres ...
Bedrich Smetana's comic opera ''
The Bartered Bride ''The Bartered Bride'' ( cz, Prodaná nevěsta, links=no, ''The Sold Bride'') is a comic opera in three acts by the Czech composer Bedřich Smetana, to a libretto by Karel Sabina. The work is generally regarded as a major contribution towards t ...
'' premiered in
Prague Prague ( ; cs, Praha ; german: Prag, ; la, Praga) is the capital and largest city in the Czech Republic, and the historical capital of Bohemia. On the Vltava river, Prague is home to about 1.3 million people. The city has a temperate ...
. *
June 2 Events Pre-1600 * 455 – Sack of Rome: Vandals enter Rome, and plunder the city for two weeks. * 1098 – First Crusade: The first Siege of Antioch ends as Crusader forces take the city; the second siege began five days later. 1601� ...
Fenian The word ''Fenian'' () served as an umbrella term for the Irish Republican Brotherhood (IRB) and their affiliate in the United States, the Fenian Brotherhood, secret political organisations in the late 19th and early 20th centuries dedicate ...
forces skirmish with Canadian militia at the battles of Ridgeway and
Fort Erie Fort Erie is a town on the Niagara River in the Niagara Region, Ontario, Canada. It is directly across the river from Buffalo, New York, and is the site of Old Fort Erie which played a prominent role in the War of 1812. Fort Erie is one o ...
. *
June 5 Events Pre-1600 * 1257 – Kraków, in Poland, receives city rights. *1283 – Battle of the Gulf of Naples: Roger of Lauria, admiral to King Peter III of Aragon, destroys the Neapolitan fleet and captures Charles of Salerno. *1288 ...
– Calculations indicate
Pluto Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest k ...
(not known at this time) reaches its only
aphelion An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion. General description There are two apsides in any e ...
(furthest point from the
Sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared rad ...
) between
1618 Events January–June * February 26 – Osman II deposes his uncle Mustafa I as Ottoman sultan (until 1622). * March 8 – Johannes Kepler discovers the third law of planetary motion (after some initial calculations, he so ...
and August 2113. * June 8 – The Parliament of Canada meets for the first time in
Ottawa Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the core ...
. *
June 11 Events Pre-1600 * 173 – Marcomannic Wars: The Roman army in Moravia is encircled by the Quadi, who have broken the peace treaty ( 171). In a violent thunderstorm emperor Marcus Aurelius defeats and subdues them in the so-called "miracle ...
– The Agra High Court is established (later shifted to the
Allahabad High Court Allahabad High Court, also known as High Court of Judicature at Allahabad is the high court based in Prayagraj that has jurisdiction over the Indian state of Uttar Pradesh. It was established on 17 March 1866, making it one of the oldest hig ...
). *
June 14 Events Pre-1600 *1158 – The city of Munich is founded by Henry the Lion on the banks of the river Isar. *1216 – First Barons' War: Prince Louis of France takes the city of Winchester, abandoned by John, King of England, and soon ...
– The
Austro-Prussian War The Austro-Prussian War, also by many variant names such as Seven Weeks' War, German Civil War, Brothers War or Fraternal War, known in Germany as ("German War"), (; "German war of brothers") and by a variety of other names, was fought in 186 ...
begins when the Austrians and most of the medium German states declare war on Prussia. * June 20 – The Kingdom of Italy declares war on Austria. *
June 22 Events Pre-1600 *217 BC – Battle of Raphia: Ptolemy IV Philopator of Egypt defeats Antiochus III the Great of the Seleucid kingdom. * 168 BC – Battle of Pydna: Romans under Lucius Aemilius Paullus defeat Macedonian King Per ...
– In Sweden, the
Riksdag of the Estates Riksdag of the Estates ( sv, Riksens ständer; informally sv, Ståndsriksdagen) was the name used for the Estates of Sweden when they were assembled. Until its dissolution in 1866, the institution was the highest authority in Sweden next to ...
votes to replace itself by an elected two-chamber Riksdag. *
June 27 Events Pre-1600 * 1358 – The Republic of Ragusa is founded. *1497 – Cornish rebels Michael An Gof and Thomas Flamank are executed at Tyburn, London, England. *1499 – Americo Vespucci, on Spanish financed trip, sights coast ...
29Battle of Langensalza: The Prussians defeat the
Hanoverian The adjective Hanoverian is used to describe: * British monarchs or supporters of the House of Hanover, the dynasty which ruled the United Kingdom from 1714 to 1901 * things relating to; ** Electorate of Hanover ** Kingdom of Hanover ** Province o ...
army.


July–September

*
July 3 Events Pre-1600 * 324 – Battle of Adrianople: Constantine I defeats Licinius, who flees to Byzantium. * 987 – Hugh Capet is crowned King of France, the first of the Capetian dynasty that would rule France until the French Revolu ...
Battle of Königgrätz The Battle of Königgrätz (or Sadowa) was the decisive battle of the Austro-Prussian War in which the Kingdom of Prussia defeated the Austrian Empire. It took place on 3 July 1866, near the Bohemian city of Hradec Králové (German: Königgr� ...
: the
Prussia Prussia, , Old Prussian: ''Prūsa'' or ''Prūsija'' was a German state on the southeast coast of the Baltic Sea. It formed the German Empire under Prussian rule when it united the German states in 1871. It was ''de facto'' dissolved by an ...
n army under King Wilhelm and Helmuth von Moltke defeats the Austrian army of
Ludwig von Benedek Ludwig August Ritter von Benedek (14 July 1804 – 27 April 1881), also known as Lajos Benedek, was an Austro-Hungarian general ( Feldzeugmeister), best known for commanding the imperial army in 1866 in their defeat at the Battle of König ...
, leading to a decisive Prussian victory in the Austro-Prussian War. *
July 5 Events Pre-1600 * 328 – The official opening of Constantine's Bridge built over the Danube between Sucidava (Corabia, Romania) and Oescus (Gigen, Bulgaria) by the Roman architect Theophilus Patricius. * 1316 – The Burgundian and ...
Princess Helena, third daughter of
Queen Victoria Victoria (Alexandrina Victoria; 24 May 1819 – 22 January 1901) was Queen of the United Kingdom of Great Britain and Ireland from 20 June 1837 until her death in 1901. Her reign of 63 years and 216 days was longer than that of any previ ...
, marries Prince Christian of Schleswig-Holstein. * July 10 – Reconstruction Treaties, Reconstruction Treaty with Choctaw & Chickasaw, Timeline of abolition of slavery and serfdom, completing the abolition of slavery in the United States; see also Choctaw freedmen. * July 13 (July 1 Old Style) – The first Constitution of Romania is issued. * July 20 – Naval Battle of Lissa (1866), Battle of Lissa: The Austrian fleet under Wilhelm von Tegetthoff defeats the Italian fleet of Carlo di Persano. * July 24 – Reconstruction Era, Reconstruction: Tennessee becomes the first U.S. state to be readmitted to the United States, Union following the American Civil War. * July 25 – The
United States Congress The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives, and an upper body, the Senate. It meets in the U.S. Capitol in Washi ...
passes legislation authorizing the four-star rank of General of the Army (United States)#Post–American Civil War era, General of the Army (later reestablished as a five-star rank); Lieutenant General Ulysses S. Grant becomes the first to have this rank. * July 27 – The successfully completes laying the transatlantic telegraph cable between Valentia Island, Ireland, and Heart's Content, Newfoundland and Labrador, Heart's Content, Newfoundland, permanently restoring a communications link. * July 28 – The ''Metric Act of 1866'' becomes law and legalizes the standardization of weights and measures in the United States. * August 23 – The Peace of Prague (1866), Treaty of Prague ends the
Austro-Prussian War The Austro-Prussian War, also by many variant names such as Seven Weeks' War, German Civil War, Brothers War or Fraternal War, known in Germany as ("German War"), (; "German war of brothers") and by a variety of other names, was fought in 186 ...
. The Limburg (Netherlands), Duchy of Limburg leaves the German Confederation. * September – The Great Tea Race of 1866 ends in London, narrowly won by the clipper ship ''Taeping''. * September 22 – Paraguay successfully Battle of Curupayty, defends Curupayty against the Triple Alliance in the
Paraguayan War The Paraguayan War, also known as the War of the Triple Alliance, was a South American war that lasted from 1864 to 1870. It was fought between Paraguay and the Triple Alliance of Argentina, the Empire of Brazil, and Uruguay. It was the deadliest ...
, killing more than 5,000 while sustaining just about 50 casualties.


October–December

* October 12 – The Treaty of Vienna (1866), Treaty of Vienna ends the war between Austria and Italy; it formalizes the annexation of Venetia (region), Venetia by Italy. * October 14 – French troops under the command of Rear Admiral Pierre-Gustave Roze land at Ganghwa Island, Korea, as part of French campaign against Korea (1866), a punitive expedition against that kingdom for the execution of French Jesuit priests. It is the first military contact between Korea and a Western force. * October 22 – The office of State President of the South African Republic is created by constitutional amendment approved at a session of the ''Volksraad''.Archontology.org: A Guide for Study of Historical Offices, South African Republic (Transvaal): Heads of State: 1857–1877
(Accessed on 14 April 2017)
* November 7 – The Ruse–Varna, Bulgaria, Varna railway line (the first railway in Bulgaria) officially opens. * December 12– Oaks explosion: The worst mining disaster in England kills 383 miners and rescuers. * December 18 – The College of Wooster is founded in Ohio.


Date unknown

* Federalist revolts occur in Argentina. * Alfred Nobel invents dynamite in Germany. * Foundation of the predecessors of Nestlé S.A., the Anglo-Swiss Milk Company and Farine Lactée Henri Nestlé. * The Minneapolis Milling Company, predecessor of General Mills, builds its own mills. * Marcus Jastrow arrives in the United States to become rabbi of Congregation Rodeph Shalom in Philadelphia. * The recommendations of the state Girls' School Committee of 1866 result in a series of progressive reforms in women's rights in Sweden. * The Famine of 1866–68 begins in Finland. * Erasmus Jacobs discovers the Eureka Diamond near Hopetown on the banks of the Orange River in the Cape of Good Hope. * Magirus, Magirus Kommamditist, as predecessor of a major worldwide Vehicle, commercial vehicles manufacturing brand, Iveco, is founded in Baden-Württemberg, Germany.


Births


January–March

* January 13 ** George Gurdjieff, Russian spiritual teacher (d. 1949) ** Vasily Kalinnikov, Russian composer (d. 1901) * January 15 ** Nathan Söderblom, Swedish archbishop, recipient of the Nobel Peace Prize (d. 1931) ** Horatio Dresser, American New Thought religious leader and writer (d. 1954) * January 16 – Percy Pilcher, English inventor and pioneer aviator (d. 1899) * January 19 – Harry Davenport (actor), Harry Davenport, American actor (d. 1949) * January 29 ** Romain Rolland, French writer, Nobel Prize in Literature, Nobel Prize laureate (d. 1944) ** Frank Tudor, Australian politician (d. 1922) * February 1 – Agda Meyerson, Swedish nurse and healthcare profession activist (d. 1924) * February 2 – Enrique Simonet, Spanish painter (d. 1927) * February 9 – George Ade, American writer, newspaper columnist and playwright (d. 1944) * February 18 – Janko Vukotić, Montenegrin general (d. 1927) *
February 26 Events Pre-1600 * 747 BC – According to Ptolemy, the epoch (origin) of the Nabonassar Era began at noon on this date. Historians use this to establish the modern BC chronology for dating historic events. * 364 – Valentinian I is ...
– Herbert Henry Dow, Canadian chemical industrialist (d. 1930) * March 5 – Arthur Leopold Busch, English-born American submarine pioneer (d. 1956) * March 7 – Hans Fruhstorfer, German lepidopterist (d. 1922) * March 15 – Matthew Charlton, Australian politician (d. 1948) * March 19 – Emilio De Bono, Italian general and fascist activist (d. 1944) * March 21 – James Harbord, American general (d. 1947)


April–June

* April 1 – Ferruccio Busoni, Italian pianist and composer (d. 1924) * April 3 – J. B. M. Hertzog, Boer General and 3rd Prime Minister of South Africa (d. 1942) * April 8 – Alfred Allen (actor), Alfred Allen, American actor (d. 1947) * April 13 – Butch Cassidy, American outlaw (k. 1908) * April 14 – Anne Sullivan, American tutor of Helen Keller (d. 1936) * April 17 – Ernest Starling, English physiologist (d. 1927) * April 21 – Josefa Toledo de Aguerri, Nicaraguan pioneer educator (d. 1962) * April 22 – Hans von Seeckt, German general (d. 1936) * April 24 – Ishii Kikujirō, Japanese diplomat (d. 1945) *
May 10 Events Pre-1600 * 28 BC – A sunspot is observed by Han dynasty astronomers during the reign of Emperor Cheng of Han, one of the earliest dated sunspot observations in China. *1291 – Scottish nobles recognize the authority of E ...
– Richard H. Jackson, American four-star admiral (d. 1971) * May 17 – Erik Satie, French composer (d. 1925) * May 22 – Charles F. Haanel, American New Thought author and businessman (d. 1949) * June 4 – Miina Sillanpää, Finnish politician (d. 1952) * June 26 ** George Herbert, 5th Earl of Carnarvon, English financier of Egyptian excavations (d. 1923) ** Josef Swickard, German actor (d. 1940)


July–September

* July 6 – Charles Mangin, French general (d. 1925) * July 9 – Macklyn Arbuckle, American actor (d. 1931) * July 13 – La Goulue, French dancer (d. 1929) * July 25 – Frederick Blackman, English plant physiologist (d. 1947) * July 27 – António José de Almeida, 6th President of Portugal and 64th Prime Minister of Portugal (d. 1929) * July 28 – Beatrix Potter, English children's author (''Peter Rabbit'' and ''The Tale of Jemima Puddle-Duck, Jemima Puddle-Duck'') (d. 1943) * August 2 – Adrien de Gerlache, Belgian naval officer and explorer (d. 1934) * August 4 – Gheorghe Mărdărescu, Romanian general and politician (d. 1938) * August 6 – Chief Thunderbird, Native American actor (d. 1946) * August 8 – Matthew Henson, African-American explorer (d. 1955) * August 12 – Jacinto Benavente, Spanish writer, Nobel Prize in Literature, Nobel Prize laureate (d. 1954) * August 14 – Dmitry Merezhkovsky, Russian novelist, poet and religious thinker (d. 1941) * September 1 :* James J. Corbett, American boxer (d. 1933) :* Thomas F. Woodlock, editor of ''The Wall Street Journal'' and Interstate Commerce Commission commissioner (d. 1945) * September 7 – Tristan Bernard, French writer (d. 1947) * September 10 – Jeppe Aakjær, Danish poet and novelist (d. 1930) * September 16 – Joe Vila, American sportswriter (d. 1934) * September 21 ** Charles Nicolle, French bacteriologist, recipient of the Nobel Prize in Physiology or Medicine (d. 1936) ** H. G. Wells, English writer (d. 1946) * September 22 – Witmer Stone, American ornithologist and botanist (d. 1939) * September 27 – Eurosia Fabris, Italian Catholic ''Blessed'' (d. 1932) * September 25 – Thomas Hunt Morgan, American geneticist, recipient of the Nobel Prize in Physiology or Medicine (d. 1945)


October–December

* October 6 ** Reginald Fessenden, Canadian inventor (d. 1932) ** Nina Bang, Danish politician (d. 1928) * October 12 – Ramsay MacDonald, Scottish Prime Minister of the United Kingdom (d. 1937) * October 29 – Antonio Luna, Filipino general (d. 1899) * November 3 – Paul Lincke, German composer (d. 1946) * November 11 – Martha Annie Whiteley, English chemist and mathematician (d. 1956) * November 12 – Sun Yat-sen, Chinese revolutionary (d. 1925) * November 16 – Cornelia Sorabji, Indian-born lawyer (d. 1954) * November 28 ** Sy Sanborn, American sportswriter (d. 1934) ** David Warfield, American stage actor (d. 1951) * November 30 ** Robert Broom, Scottish paleontologist (d. 1951) ** Andrey Lyapchev, 22nd Prime Minister of Bulgaria (d. 1933) * December 2 – Constantin Cristescu, Romanian general (d. 1923) * December 11 - Ada Baker, Australian soprano, singing teacher and vaudeville star (d. 1949) * December 12 – Alfred Werner, German chemist, Nobel Prize in Chemistry, Nobel Prize laureate (d. 1919) * December 16 (December 4 O.S.) – Wassily Kandinsky, Russian-born painter (d. 1944) * December 17 – Kazys Grinius, 5th Prime Minister of Lithuania (d. 1950) * December 29 – Marie Cahill, American singer and actress (d. 1933)


Date unknown

* William M. Dalton, American Old West outlaw (d. 1894)


Deaths


January–June

* January (date unknown) – Thomas Baldwin Marsh, American religious leader (b. 1799) * January 16 – Phineas Quimby, American physician (b. 1802) * January 19 – Harriet Ludlow Clarke, British artist * January 23 – Thomas Love Peacock, English satirist (b. 1785) * January 31 – Friedrich Rückert, German poet, translator and professor of Oriental languages (b. 1788) * February 25 – Sarah Ann Gill, Barbadian national heroine (b. 1795) * March 4 – Alexander Campbell (clergyman), Alexander Campbell, Irish/U.S. founder of the Disciples of Christ (b. 1788) * March 6 – William Whewell, English scientist, philosopher and historian of science (b. 1794) * March 20 – Rikard Nordraak, Norwegian composer (b. 1842) * March 21 – Nadezhda Durova, first female Russian military officer (b. 1783) * March 24 – Maria Amalia of Naples and Sicily, Queen of France (b. 1782) * March 28 – Solomon Foot, American politician (b. 1802) * March 29 – John Keble, British churchman (b. 1792) * April 1 – Elizabeth Jesser Reid, English social reformer, founder of Bedford College (London), Bedford College (b. 1789) *
April 4 Events Pre-1600 *503 BC – Roman consul Agrippa Menenius Lanatus celebrates a triumph for a military victory over the Sabines. * 190 – Dong Zhuo has his troops evacuate the capital Luoyang and burn it to the ground. * 611 – ...
– William Dick (veterinarian), William Dick, founder of Royal (Dick) School of Veterinary Studies, Edinburgh Veterinary College (b. 1793) * April 5 – Thomas Hodgkin, British physician (b. 1798) * April 7 – Johann Sedlatzek, German flautist (b. 1789) * April 12 – Peter Hesketh-Fleetwood, English Member of Parliament and developer (b. 1801) * May 13 – Nikolai Brashman, Russian mathematician of Czech origin (b. 1796) * May 29 – Winfield Scott, American general and presidential candidate (b. 1786) * June 7 – Chief Sealth, Native American for whom Seattle is named (b. c. 1786) * June 17 – Lewis Cass, American military officer, politician, and statesman (b. 1782)


July–December

* July 20 – Bernhard Riemann, German mathematician (b. 1826) * July 25 – Floride Calhoun, Second Lady of the United States (b. 1792) * July 29 – Madame Clicquot Ponsardin, French champagne producer (b. 1777) * August 1 – John Ross, long-serving principal chief of the Cherokee Nation, of natural causes, in Washington D. C. (born 1790 in Cherokee Nation East). * August 6 – Christian Eric Fahlcrantz, Swedish writer (b. 1790) * August 20 – Maria De Mattias, Italian Catholic saint (b. 1805) * August 29 – Tokugawa Iemochi, 14th ''shōgun'' of the Tokugawa shogunate of Japan (b. 1846) * September 4 – Theresa Pulszky, European author (b. 1819) * September 30 – Per Gustaf Svinhufvud af Qvalstad, Swedo-Finnish treasurer of Tavastia (historical province), Tavastia province, manor host, and paternal grandfather of President P. E. Svinhufvud (b. 1804) * October 13 – Celadon Leeds Daboll, American merchant and inventor (b. 1818) * October 18 – Manuel Bulnes, Chilean general and politician, President of Chile (b. 1799) * November 11 – Agustín Jerónimo de Iturbide y Huarte, Prince Imperial of Mexico (b. 1807) * November 14 – King Miguel I of Portugal (b. 1802) * November 26 – Jean-Jacques Willmar, Luxembourg politician (b. 1792) * December 1 – George Everest, Welsh geodesist (b. 1790) * December 21 – William J. Fetterman, United States Army officer (b. 1835?) * December 21 – Mercedes Marín del Solar, Chilean poet, reform educator (b. 1804)


Date unknown

*Du Bois Agett, early settler of Western Australia (b. 1796)


References

{{DEFAULTSORT:1866 1866,