This article is about the year 1787. For the number, see 1787 (number)
Year 1787 (MDCCLXXXVII) was a common year starting on Monday (link will display the full calendar) of the Gregorian calendar and a common year starting on Friday of the 11-day slower Julian calendar.
Scene at the Signing of the Constitution of the United States
- January 6 – The North Carolina General Assembly authorizes nine commissioners to purchase 100 acres (0.40 km2) of land for the county seat of Chatham County. The town is named Pittsborough (later shortened to Pittsboro) for William Pitt the Younger.
- January 11 – William Herschel discovers Titania and Oberon, two moons of Uranus.
- January 19 – Mozart's Symphony No. 38 is premièred in Prague.
- February 4 – Shays' Rebellion in Massachusetts fails.
- February 28 – A charter is granted establishing the institution which will become the University of Pittsburgh.
- April 2 – A Charter of Justice is signed providing the authority for the establishment of the first New South Wales (i.e. Australian) Courts of Criminal and Civil Jurisdiction.
- May 7 – The New Church is founded.
- May 13 – Captain Arthur Phillip leaves Portsmouth in England with the eleven ships of the First Fleet carrying around 700 convicts and at least 300 crew and guards to establish a penal colony in Australia.
- May 14 – In Philadelphia, Pennsylvania, delegates begin arriving for a Constitutional Convention (United States).
- May 22 – In Britain, Thomas Clarkson and Granville Sharp found the Society for Effecting the Abolition of the Slave Trade with support from John Wesley, Josiah Wedgwood and others.
- May 25 – In Philadelphia, Pennsylvania, delegates begin to convene the Constitutional Convention intended to amend the Articles of Confederation. However, a new United States Constitution is eventually produced. George Washington presides over the Convention.
- May – Orangist troops attack Vreeswijk, Harmelen and Maarssen: civil war starts in the Dutch Republic.
- May 31 – The original Lord's Cricket Ground in London holds its first cricket match; Marylebone Cricket Club founded.
- June 6 – Franklin College, named for Benjamin Franklin, opens in Lancaster, Pennsylvania. It later merges with Marshall College to become Franklin and Marshall College.
- June 20 – Oliver Ellsworth moves at the Federal Convention that the government be called the United States.
- June 28 – Princess Wilhelmina of Orange, sister of King Frederick William II of Prussia, is captured by Dutch Republican patriots, taken to Goejanverwellesluis and not allowed to travel to The Hague.
- January 1 – Manuel José Arce, Revolutionary General and first President of The Federal Republic of Central America. (d. 1847)
- February 10 – William Bradley, Britain's tallest man ever 7 ft 9 in. (d. 1820)
- February 17 – George Mogridge (Old Humphrey), British writer and poet (d. 1854)
- March 7 – George Bethune English, American explorer and writer (d. 1828)
- March 11 – Ivan Nabokov, Russian General (d. 1852)
- March 17 – Edmund Kean, British actor (d. 1833)
- April 26 – Ludwig Uhland, German poet (d. 1862)
- June 28 – Sir Harry Smith, English soldier and military commander (d. 1860)
- November 7 – Vuk Stefanović Karadžić, Serbian linguist and major reformer of the Serbian language (d. 1864)
- November 18 – Louis Daguerre, French artist and chemist (d. 1851)
- November 21 – Samuel Cunard, Canadian business, prominent Nova Scotian, founder of the Cunard Line (d. 1865)
- December 10 – Thomas Hopkins Gallaudet, American educator (d. 1851)
- December 16 – Mary Russell Mitford, English novelist and dramatist (d. 1855)
- February 13
- April 1 – Floyer Sydenham, English classical scholar (b. 1710)
- April 2 – Thomas Gage, British general (b. 1719)
- May 10 – William Watson, English physician and scientist (b. 1715)
- May 28 – Leopold Mozart, Austrian composer (b. 1719)
- June 20 – Carl Friedrich Abel, German composer (b. 1723)
- July 4 – Charles de Rohan, prince de Soubise, Marshal of France (b. 1715)
- August 1 – Alphonsus Liguori, Italian founder of the Redemptionist order (b. 1696)
- October 7 – Henry Muhlenberg, German-born founder of the U.S. Lutheran Church (b. 1711)
- October 28 – Johann Karl August Musäus, German author (b. 1735)
- November 3 – Robert Lowth, English bishop and grammarian (b. 1710)
- November 15 – Christoph Willibald Gluck, German composer (b. 1714)
- December 18