1870

1870 in various calendars
Gregorian calendar	1870; MDCCCLXX
Ab urbe condita	2623
Armenian calendar	1319; ԹՎ ՌՅԺԹ
Assyrian calendar	6620
Baháʼí calendar	26–27
Balinese saka calendar	1791–1792
Bengali calendar	1277
Berber calendar	2820
British Regnal year	33 Vict. 1 – 34 Vict. 1
Buddhist calendar	2414
Burmese calendar	1232
Byzantine calendar	7378–7379
Chinese calendar	己巳年 (Earth Snake); 4567 or 4360; — to —; 庚午年 (Metal Horse); 4568 or 4361
Coptic calendar	1586–1587
Discordian calendar	3036
Ethiopian calendar	1862–1863
Hebrew calendar	5630–5631
Hindu calendars
- Vikram Samvat	1926–1927
- Shaka Samvat	1791–1792
- Kali Yuga	4970–4971
Holocene calendar	11870
Igbo calendar	870–871
Iranian calendar	1248–1249
Islamic calendar	1286–1287
Japanese calendar	Meiji 3; (明治３年)
Javanese calendar	1798–1799
Julian calendar	Gregorian minus 12 days
Korean calendar	4203
Minguo calendar	42 before ROC; 民前42年
Nanakshahi calendar	402
Thai solar calendar	2412–2413
Tibetan calendar	阴土蛇年; (female Earth-Snake); 1996 or 1615 or 843; — to —; 阳金马年; (male Iron-Horse); 1997 or 1616 or 844

1870 in various calendars
Gregorian calendar	1870; MDCCCLXX
Ab urbe condita	2623
Armenian calendar	1319; ԹՎ ՌՅԺԹ
Assyrian calendar	6620
Baháʼí calendar	26–27
Balinese saka calendar	1791–1792
Bengali calendar	1277
Berber calendar	2820
British Regnal year	33 Vict. 1 – 34 Vict. 1
Buddhist calendar	2414
Burmese calendar	1232
Byzantine calendar	7378–7379
Chinese calendar	己巳年 (Earth Snake); 4567 or 4360; — to —; 庚午年 (Metal Horse); 4568 or 4361
Coptic calendar	1586–1587
Discordian calendar	3036
Ethiopian calendar	1862–1863
Hebrew calendar	5630–5631
Hindu calendars
- Vikram Samvat	1926–1927
- Shaka Samvat	1791–1792
- Kali Yuga	4970–4971
Holocene calendar	11870
Igbo calendar	870–871
Iranian calendar	1248–1249
Islamic calendar	1286–1287
Japanese calendar	Meiji 3; (明治３年)
Javanese calendar	1798–1799
Julian calendar	Gregorian minus 12 days
Korean calendar	4203
Minguo calendar	42 before ROC; 民前42年
Nanakshahi calendar	402
Thai solar calendar	2412–2413
Tibetan calendar	阴土蛇年; (female Earth-Snake); 1996 or 1615 or 843; — to —; 阳金马年; (male Iron-Horse); 1997 or 1616 or 844

Millennium:	2nd millennium
Centuries:	18th century; 19th century ; 20th century;
Decades:	1850s; 1860s; 1870s ; 1880s; 1890s;
Years:	1867; 1868; 1869; 1870 ; 1871; 1872; 1873;

1870 (MDCCCLXX) was a common year starting on Saturday (see link for calendar) of the Gregorian calendar or a common year starting on Monday of the 12-day-slower Julian calendar.

Events

January 1 - Plans for the Brooklyn Bridge are completed.
January 3 - Construction of the Brooklyn Bridge begins.
January 6 - The inauguration of the Musikverein (Vienna).
January 10 - John D. Rockefeller incorporates Standard Oil
January 15 - A political cartoon for the first time symbolizes the United States Democratic Party with a donkey ("A Live Jackass Kicking a Dead Lion" by Thomas Nast for Harper's Weekly).
January 26 - American Civil War: Virginia rejoins the Union
January 27 - First college sorority, Kappa Alpha Theta, is established at DePauw University

February - Vrain Denis-Lucas in sentenced for two years in prison for multiple forgery in Paris
February 2 - It is revealed that the famed Cardiff Giant was just carved gypsum and not the petrified remains of a human.
February 3 - The 15th Amendment to the United States Constitution is passed
February 10 - Anaheim, California is incorporated.
February 10 - The YWCA is founded (New York City)
February 12 - Women gain the right to vote in Utah Territory.
February 23 - Military control of Mississippi ends and it is readmitted to the Union.
February 25 - Hiram Rhodes Revels, a Republican from Mississippi, is sworn into the United States Senate, becoming the first African American ever to sit in the U.S. Congress
February 26 - In New York City, the first pneumatic-subway is opened.
February 28 - The Bulgarian Exarchate is established by decree of Sultan Abd-ul-Aziz of the Ottoman Empire.

March 2 - Francisco Solano López' last troops cornered by Triple Alliance troops at Cerro Cora. López refuses to surrender and is killed. Fighting ends in Paraguay - the War of the Triple Alliance is over
March 19 - Ohio Legislature passes the Cannon Act, thereby establishing the Ohio Agriculture and Mechanical College, later The Ohio State University.
March 24 - Syracuse University is established and officially opens.
March 30 - The 15th Amendment is entered into the United States Constitution, giving blacks the right to vote.
March 30 - Texas is readmitted to the Union following Reconstruction.

May 12 - The Canadian province of Manitoba is created in response to Louis Riel's Red River Rebellion
May 14 - First rugby match to be played in New Zealand, between the Nelson Football Club and Nelson College.
May 24 - The Port Adelaide Football Club play their first match of Australian rules football at Buck's Flat, Glanville, South Australia.
May 24 - Opening day of the Brooklyn Bridge.*******The Brooklyn Bridge was completed thirteen years later and was opened for use on May 24, 1883.

June 9 - The great author and actor Charles Dickens dies after suffering from a stroke. 'The inscription on his tomb reads: "He was a sympathiser to the poor, the suffering, and the oppressed; and by his death, one of England's greatest writers is lost to the world."'
June 22 - The U.S. Congress creates the Department of Justice.
June 26 - Christmas is declared a federal holiday in the United States

July 13 - The Ems Dispatch serves as a reason for a war between Prussia and France
July 15 - Reconstruction: Georgia becomes the last former Confederate state to be readmitted to the Union, and the CSA is dissoluted.
July 16 - Lambert McKenna is born, Irish scholar.
July 19 - Franco-Prussian War: France declares war on Prussia.

September 2 - Franco-Prussian War: Battle of Sedan - Prussian forces defeat the French armies and take emperor Napoleon III and 100,000 of his soldiers prisoner at Sedan.
September 4 - Emperor Napoleon III of France is deposed and the Third Republic is declared. Empress Eugenie flees to England with her children.
September 6 - Louisa Ann Swain of Laramie, Wyoming, votes in the morning, becoming the first woman in the United States to cast a vote legally after 1807.
September 20 - With Bersaglieri soldiers entering Rome at Porta Pia, the unification of Italy is completed. End of the last remnant of the Papal States.

October 2 – Referendum in Rome supports joining the Italy with 133681 against 1500. Decision is made official October 6. Rome becomes the capital of unified Italy.
October 8 - Leon Michel Gambetta escapes the besieged Paris in a hot-air balloon.

November 1 - In the United States, the newly-created Weather Bureau (later renamed the National Weather Service) makes its first official meteorological forecast: "High winds at Chicago and Milwaukee... and along the Lakes".
November 16 - Spanish Cortes Generales proclaims Amadeo de Saboya as King Amadeus I of Spain.