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1785 in various calendars
Gregorian calendar	1785; MDCCLXXXV
Ab urbe condita	2538
Armenian calendar	1234; ԹՎ ՌՄԼԴ
Assyrian calendar	6535
Balinese saka calendar	1706–1707
Bengali calendar	1192
Berber calendar	2735
British Regnal year	25 Geo. 3 – 26 Geo. 3
Buddhist calendar	2329
Burmese calendar	1147
Byzantine calendar	7293–7294
Chinese calendar	甲辰年 (Wood Dragon); 4482 or 4275; — to —; 乙巳年 (Wood Snake); 4483 or 4276
Coptic calendar	1501–1502
Discordian calendar	2951
Ethiopian calendar	1777–1778
Hebrew calendar	5545–5546
Hindu calendars
- Vikram Samvat	1841–1842
- Shaka Samvat	1706–1707
- Kali Yuga	4885–4886
Holocene calendar	11785
Igbo calendar	785–786
Iranian calendar	1163–1164
Islamic calendar	1199–1200
Japanese calendar	Tenmei 5; (天明５年)
Javanese calendar	1711–1712
Julian calendar	Gregorian minus 11 days
Korean calendar	4118
Minguo calendar	127 before ROC; 民前127年
Nanakshahi calendar	317
Thai solar calendar	2327–2328
Tibetan calendar	阳木龙年; (male Wood-Dragon); 1911 or 1530 or 758; — to —; 阴木蛇年; (female Wood-Snake); 1912 or 1531 or 759

Millennium:	2nd millennium
Centuries:	17th century; 18th century ; 19th century;
Decades:	1760s; 1770s; 1780s ; 1790s; 1800s;
Years:	1782; 1783; 1784; 1785 ; 1786; 1787; 1788;

1785 (MDCCLXXXV) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1785th year of the Common Era (CE) and Anno Domini (AD) designations, the 785th year of the 2nd millennium, the 85th year of the 18th century, and the 6th year of the 1780s decade. As of the start of 1785, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.

Events

January–March

January 1
- The Burmese Konbaung Dynasty annexes the Mrauk U Kingdom of Arakan.
- The first issue of the Daily Universal Register, later known as The Times, is published in London.
January 7 – Frenchman Jean-Pierre Blanchard and American John Jeffries travel from Dover, England to Calais, France in a hydrogen gas balloon, becoming the first to cross the English Channel by air.
January 11 – Richard Henry Lee is elected as President of the U.S. Congress of the Confederation.^[1]
January 20 – Battle of Rạch Gầm-Xoài Mút: Invading Siamese forces, attempting to exploit the political chaos in Vietnam, are ambushed and annihilated at the Mekong River, by the Tây Sơn.
January 27 – The University of Georgia in the United States is chartered by the Georgia General Assembly meeting in Savannah. The first students are admitted in Athens, Georgia in 1801.
February 9 – Sir Warren Hastings, who has been governing India on behalf of King George III as the Governor-General of the Presidency of Fort William (later British India), resigns. Sir John Macpherson administers British India until General Charles Cornwallis arrives 19 months later.^[2]
February 27 – The Confederation Congress votes an $80,000 expense to establish diplomatic relations with Morocco.^[3]
March 7 – Scottish geologist James Hutton first presents his landmark work, Theory of the Earth; or an Investigation of the Laws observable in the Composition, Dissolution, and Restoration of Land upon the Globe to the Royal Society of Edinburgh.^[4]
General Henry Knox is appointed as the Confederation Congress's Secretary of War, with added duties as the Secretary of Navy, both functions now of the U.S. Department of Defense.^[1]
March 10
- American engineer James Rumsey sends a letter to George Washington informing of his plans to create a successful steamboat.^[5]
- Thomas Jefferson is appointed the new U.S. Minister to France, and Benjamin Franklin's request for permission to return home is accepted.^[1]

April–June

April 19 – The Commonwealth of Massachusetts cedes all of its claims to territory west of New York State to the United States Confederation Congress. The area will become the southern portions of Michigan and Wisconsin.^[6]^[1]
April 21 – The Empress Catherine the Great of the Russian Empire issues the Charter to the Towns, providing for "a coherent, unified system of administration" for new governments organized in Russia.
April 26 – John Adams is appointed as the U.S. ambassador to the United Kingdom, and Thomas Jefferson as ambassador to France.^[7]
April 28 – Astronomer William Herschel begins his second series of surveys of the stars, published in 1789.^[8]
May 10 – A hot air balloon crashes in Tullamore, Ireland, causing a fire that burns down about 100 houses, making it the world's first aviation disaster (by 36 days).^[9]
May 20 – The Northwest Ordinance of 1785, setting the rules for dividing the U.S. Northwest Territory (later Ohio, Indiana, Illinois, Wisconsin and Michigan) into townships of 36 square miles apiece, is passed by the Confederation Congress. Walter G. Robillard and Lane J. Bouman, Clark on Surveying and Boundaries (LexisNexis, 1997) The survey system will later be applied to the continent west of the Mississippi River.^[1]
May 23 – Benjamin Franklin receives a patent for bifocals.
June 3 – The Continental Navy is disbanded.
June 15 – After several attempts, Jean-François Pilâtre de Rozier and his companion, Pierre Romain, set off in a balloon from Boulogne-sur-Mer, but the balloon suddenly deflates (without the envelope catching fire) and crashes near Wimereux in the Pas-de-Calais, killing both men, making it the first fatal aviation disaster.

July–September

July 2 – Don Diego de Gardoqui arrives in New York City as Spain's first minister to the United States.^[1]
July 6 – The dollar (and a decimal currency system) is unanimously chosen as the money unit for the United States by the Congress of the Confederation.^[10]
July 16 – The Piper-Heidsieck Champagne house is founded by Florens-Louis Heidsieck in Reims, France.
August 1 – The fleet of French explorer Jean-François de Galaup, comte de Lapérouse leaves Paris for the circumnavigation of the globe.
August 15 – Cardinal de Rohan is arrested in Paris; the Necklace Affair comes into the open.
September 10 – The United States and the Kingdom of Prussia sign a Treaty of Amity and Commerce.^[11]
September 13
- The Bank of North America, central bank for the Confederation Congress government, loses its charter.^[12]
- Benjamin Franklin returns to Philadelphia after seven years as the U.S. Ambassador to France and prepares to take office as the new Governor of Pennsylvania.^[13]

October–December

October 5 – Vincenzo Lunardi of Italy becomes the first person to pilot a balloon over Scotland.^[14]
October 13
- The first newspaper in British India, the English-language Madras Courier, is published. It continues publication as a weekly until 1794.^[15]
- France mints new Louis d'or coins, with the image of King Louis XVI on the obverse, and one-sixth less gold than the coins with King Louis XV's image.^[16]
October 17 – The Commonwealth of Virginia stops the importation of new African slaves by declaring that "No persons shall henceforth be slaves within this commonwealth, except such as were so on the seventeenth day of October, 1785, and the descendants of the females of them." ^[17]
October 18 – Benjamin Franklin takes office as the new President of the Supreme Council of Pennsylvania, at the time the equivalent of a republic as one of the 13 independent governments of the United States of America under the Articles of Confederation.^[13]
November 23 – John Hancock of Massachusetts, the former President of the Continental Congress, is selected as the new President of the Congress of the Confederation, but is unable to take office because of illness.^[1]
November 28 – The Treaty of Hopewell is signed between the United States of America and the Cherokee Nation.
December 11 – An edict is issued limiting Masonic lodges throughout the Holy Roman Empire by Emperor Joseph II. With the exception of Vienna, Budapest and Prague, no Empire province may have more than one lodge.^[18]

Date unknown

The University of New Brunswick is founded in Fredericton, New Brunswick.
Coal gas is first used for illumination.
Louis XVI of France signs a law that a handkerchief must be square.
The British government establishes a permanent land force in the Eastern Caribbean, based in Barbados.
Belfast Academy (later Belfast Royal Academy) is founded by Rev. James Crombie in Belfast, Northern Ireland.
Friedrich Heinrich Jacobi publishes Letters on the Teachings of Spinoza, and starts the Pantheism controversy.
Napoleon Bonaparte becomes a lieutenant in the French artillery.
Cabinet des Modes, the first fashion magazine, is published in France.
Mozart's "Haydn" String Quartets are published, as is his collaboration with Salieri and Cornetti, Per la ricuperata salute di Ofelia.

Charles Adams, John Adams’ son and John Quincy Adams's brother enters Harvard in August, at age 15. A few months later, he starts to drink often and would get into trouble, and was almost expelled from Harvard when he was caught running naked through the Campus while drunk with other boys.

Births

January 4
- Jacob Grimm, German philologist, folklorist, and writer (d. 1863)
- Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg (d. 1831)
January 15 – William Prout English chemist, physician, and natural theologian (d. 1850)
January 20 – Theodor Grotthuss, German-Lithuanian chemist (d. 1822)
February 8 – Martín Miguel de Güemes Argentine military leader (d. 1821)
February 10 – Claude-Louis Navier, French engineer, physicist (d. 1836)
February 26 – Anna Sundström, Swedish chemist (d. 1871)
March 11
- John McLean, American politician, Associate Justice of the Supreme Court of the United States (d. 1861)
- Eleonore Prochaska, German heroine soldier (d. 1805)
March 17 – Ellen Hutchins, Irish botanist (d. 1815)
March 27 – Louis XVII of France (d. 1795)
April 4 – Bettina von Arnim, German poet (d. 1859)
April 26 – John James Audubon, French-American naturalist, illustrator (d. 1851)
April 29 – Karl Drais, German inventor, creator of a precursor to the bicycle (d. 1851)
May 18 – John Wilson, Scottish writer (d. 1854)
May 20 – Marcellin Champagnat, French Catholic saint (d. 1840)
May 22 – John Hindmarsh, English naval officer, first Governor of South Australia (d. 1860)
July 6 – William Jackson Hooker, English botanist (d. 1865)
July 20 – Mahmud II, Ottoman sultan (d. 1839)
August 15 – Thomas de Quincey, English writer (d. 1859)
August 23 – Oliver Hazard Perry, American naval officer (d. 1819)
August 27 – Agustín Gamarra, Peruvian general and politician, 10th and 14th President of Peru (d. 1841)
September 27 – David Walker, African-American abolitionist (d. 1830)
October 15 – José Miguel Carrera, Chilean general, founding father (d. 1821)
October 17 – Gunatitanand Swami, born Mulji Sharma, Indian paramahamsa of the Hindu Swaminarayan Sampraday sect (d. 1867)
October 18 – Thomas Love Peacock, English satirist (d. 1866)
October 20 – George Ormerod, English historian and antiquarian (d. 1873)
November 11 – Diponegoro, Javanese Prince (d. 1855)
November 18 – David Wilkie, Scottish painter (d. 1841)
November 21 – William Beaumont, American physician and surgeon (d. 1853)
November 28 – Victor de Broglie, Prime Minister of France (d. 1870)
December 17 – Dorothea Lieven, Latvian diplomat, politically active princess (d. 1857)
December 23 – Christian Gobrecht, American engraver, designer of the United States Seated Liberty coinage (d. 1844)
December 26 – Étienne Constantin de Gerlache, 1st Prime Minister of Belgium (d. 1871)

Deaths

January 3 – Baldassare Galuppi, Italian composer (b. 1706)^[19]
January 6 – Haym Salomon, Polish-Jewish American financier of the American Revolution (b. 1740)
January 19 – Jonathan Toup, English classical scholar, critic (b. 1713)
January 23 – Matthew Stewart, Scottish mathematician (b. 1717)
February 24 – Sir Thomas Dyke Acland, 7th Baronet (b. 1722)
February 26 – Barbara Erni, Liechtenstein confidence trickster (b. 1743)
March 14 – Giovanni Battista Locatelli, Italian opera director (b. 1713)
April 14 – William Whitehead, English writer (b. 1715)
April 26 – Johan Samuel Augustin, German-Danish astronomical writer, civil servant (b. 1715)
May 8
- Étienne François, duc de Choiseul, French statesman (b. 1719)
- Pietro Longhi, Venetian painter (b. 1701)
June 2
- Jean Paul de Gua de Malves, French mathematician (b. 1713)
- Gottfried August Homilius, German composer, cantor and organist (b. 1714)^[20]
June 30 – James Oglethorpe, English general, founder of the state of Georgia (b. 1696)
July 5 – Anne Poulett, British politician (b. 1711)
July 6 – Frederick August I, Duke of Oldenburg (b. 1711)
July 9 – William Strahan, British politician (b. 1715)
July 12 – Louis-René de Caradeuc de La Chalotais, French jurist on the so-called "Brittany affair" (b. 1701)
July 13 – Stephen Hopkins, Founding Father of the United States (b. 1707)
July 17 – Margaret Bentinck, Duchess of Portland, British duchess (b. 1715)
August 17 – Jonathan Trumbull, Governor of the Colony and the state of Connecticut (b. 1710)
August 26 – George Germain, 1st Viscount Sackville, British soldier, politician (b. 1716)
August 28 – Jean-Baptiste Pigalle, French sculptor (b. 1714)
August 31 – Pietro Chiari, Italian playwright (b. 1712)
September 19 – Maria Antonia Ferdinanda of Spain, Queen consort of Sardinia (b. 1729)
September 30 – Johann Jakob Moser, German jurist (b. 1701)
October 4
- David Brearley, delegate to the U.S. Constitutional Convention (b. 1703)
- Alexander Runciman, Scottish painter (b. 1736)
November 13 – Joaquín Ibarra, Spanish printer (b. 1725)
November 15 – César Gabriel de Choiseul, French officer (b. 1712)
November 18 – Louis Philippe I, Duke of Orléans, French soldier, writer (b. 1725)
November 19 – Bernard de Bury, French composer (b. 1720)
November 20 – James Wright, Governor of Georgia (b. 1716)
November 25 – Richard Glover, English poet (b. 1712)

December 6 – Kitty Clive, English actress, playwright (b. 1711)^[21]
December 29 – Johan Herman Wessel, Norwegian author (b. 1742)
date unknown
- Faustina Pignatelli, Italian mathematician (b. 1705)

References

^ ^a ^b ^c ^d ^e ^f ^g Harper's Encyclopaedia of United States History from 458 A. D. to 1909, ed. by Benson John Lossing and, Woodrow Wilson (Harper & Brothers, 1910) p167
^ G.S.Chhabra, Advance Study in the History of Modern India, Volume-1: 1707-1803 (Lotus Press, 2005) p282
^ The Diplomatic Correspondence of the United States of America: From the Signing of the Definitive Treaty of Peace, September 10, 1783 to the Adoption of the Constitution, March 4, 1789, Volume II (Blair & Rives, 1837) p365
^ Jill Schneiderman, The Earth Around Us: Maintaining A Livable Planet (Henry Holt and Company, 2000) p24
^ Annual Report of the Commissioner of Patents, Part 1 (U.S. Government Printing Office, 1850) p535
^ The United States: Its Beginnings, Progress and Modern Development, Volume 3, ed. by Edwin Wiley and Irving E. Rines (American Educational Alliance, 1912) p384
^ Robert V. Remini, John Quincy Adams: 6th President, 1825-1829 (Times Books, 2014) p17
^ Stephen James O'Meara, Deep-Sky Companions: The Caldwell Objects (Cambridge University Press, 2016) p534
^ Byrne, Michael (January 9, 2007). "The Tullamore Balloon Fire - First Air Disaster in History". Tullamore History. Offaly Historical & Archaeological Society. Archived from the original on March 26, 2012. Retrieved 2012-08-21.
^ David C. Harper, ed., 2011 North American Coins and Prices (Krause Publications, 2010) p9
^ "The Role of Political Revolution in the Theory of International Law", by Theodor Schweisfurth, in The Structure and Process of International Law: Essays in Legal Philosophy, Doctrine and Theory, ed. by R. St.J. Macdonald and Douglas M. Johnston (Martinus Nijhoff, 1986) p913
^ Lawrence Lewis, A History of the Bank of North America, the First Bank Chartered in the United States" (J.B. Lippincott & Company, 1882) p54
^ ^a ^b Paul Zall, Benjamin Franklin's Humor (University Press of Kentucky, 2005) p153
^ "On Air Balloons" (Mechanics Magazine, June 17, 1826) p102
^ Henry Davison Love, ed., Indian Records Series: Vestiges of Old Madras, 1640-1800 (Mittal Publications, p440
^ Jean-Baptise Say, A Treatise on Political Economy (Ludwig von Mises Institute, 2008) p254
^ W. E. B. Du Bois, The Suppression of the African Slave-Trade (Wilberforce University, 1896, reprinted by Oxford University Press, 2014) p xxv
^ Jasper Ridley, The Freemasons: A History of the World's Most Powerful Secret Society (Skyhorse Publishing, 2011)
^ Arnold, Denis. "Galuppi's Religious Music", The Musical Times, 1 January 1985, pp. 45–47 and 49–50 (subscription required)
^ Don Michael Randel, ed. (1996). The Harvard Biographical Dictionary of Music. Cambridge: Harvard University Press. p. 392. ISBN 9780674372993. Homilius, Gottfried August
^ Kalman Burnim; Edward A. Langhans; Philip H. Highfill (1975). A Biographical Dictionary of Actors, Actresses, Musicians, Dancers, Managers and Other Stage Personnel in London, 1660-1800. Southern Illinois University Press. p. 357.