1840

Millennium:	2nd millennium
Centuries:	18th century 19th century 20th century
Decades:	1820s 1830s 1840s 1850s 1860s
Years:	1837 1838 1839 1840 1841 1842 1843

1840 in various calendars

Gregorian calendar	1840 MDCCCXL
Ab urbe condita	2593
Armenian calendar	1289 ԹՎ ՌՄՁԹ
Assyrian calendar	6590
Balinese saka calendar	1761–1762
Bengali calendar	1246–1247
Berber calendar	2790
British Regnal year	3 Vict. 1 – 4 Vict. 1
Buddhist calendar	2384
Burmese calendar	1202
Byzantine calendar	7348–7349
Chinese calendar	己亥年 (Earth Pig) 4537 or 4330     — to — 庚子年 (Metal Rat) 4538 or 4331
Coptic calendar	1556–1557
Discordian calendar	3006
Ethiopian calendar	1832–1833
Hebrew calendar	5600–5601
Hindu calendars
- Vikram Samvat	1896–1897
- Shaka Samvat	1761–1762
- Kali Yuga	4940–4941
Holocene calendar	11840
Igbo calendar	840–841
Iranian calendar	1218–1219
Islamic calendar	1255–1256
Japanese calendar	Tenpō 11 (天保１１年)
Javanese calendar	1767–1768
Julian calendar	Gregorian minus 12 days
Korean calendar	4173
Minguo calendar	72 before ROC 民前72年
Nanakshahi calendar	372
Thai solar calendar	2382–2383
Tibetan calendar	阴土猪年 (female Earth-Pig) 1966 or 1585 or 813     — to — 阳金鼠年 (male Iron-Rat) 1967 or 1586 or 814

Year 1840 (MDCCCXL) was a leap year starting on Wednesday (link will display the full calendar) of the Gregorian calendar and a leap year starting on Monday of the 12-day slower Julian calendar.

Events

January–March

January 13: Steamship Lexington sinks.

• January 3 – One of the predecessor papers of the Herald Sun of Melbourne, Australia, The Port Phillip Herald, is founded.
• January 10 – Uniform Penny Post is introduced in the United Kingdom.
• January 13 – The steamship Lexington burns and sinks in icy waters, four miles off the coast of Long Island; 139 die, only four survive.
• January 19 – Captain Charles Wilkes' United States Exploring Expedition sights what becomes known as Wilkes Land in the southeast quadrant of Antarctica, claiming it for the United States and providing evidence that Antarctica is a complete continent.
• January 21 – Dumont D'Urville discovers Adélie Land in Antarctica, claiming it for France.
• January 22 – British colonists reach New Zealand, officially founding Wellington.
• February – The Rhodes blood libel is made against the Jews of Rhodes.
• February 5 – The murder of a Capuchin friar and his Greek servant leads to the Damascus affair, a highly publicized case of blood libel against the Jews of Damascus.
• February 6 – The Treaty of Waitangi, granting British sovereignty in New Zealand, is signed.
• February 10 – Queen Victoria of the United Kingdom of Great Britain and Ireland marries her cousin Prince Albert of Saxe-Coburg and Gotha.
• February 11 – Gaetano Donizetti's opera La fille du régiment premieres in Paris.
• March 1
  • William Hobson, the first Governor of New Zealand, suffers a stroke.
  • Adolphe Thiers becomes prime minister of France.
• March 9 – The Wilmington and Raleigh Railroad is completed from Wilmington, North Carolina to Weldon, North Carolina. At 161.5 miles (260 km), it is the world's longest railroad.

April–June

• April – The Raleigh and Gaston Railroad is completed from Raleigh, North Carolina to near Weldon, North Carolina.
• April 15 – King's College Hospital opens in London.
• May 1 – Britain issues the Penny Black, the world's first postage stamp.
• May 6 – The Penny Black, the world's first postage stamp, becomes valid for the pre-payment of postage.
• May 7 – The Great Natchez Tornado: A massive tornado strikes Natchez, Mississippi during the early afternoon hours. Before it is over, 317 people are killed and 109 injured. It is the second deadliest tornado in U.S. history.
• May 21 – New Zealand is declared a British colony.

July–September

July 4: RMS Britannia.

• July 4 – The Cunard Line's 700-ton wooden paddlewheel steamer RMS Britannia departs from Liverpool, bound for Halifax, Nova Scotia on the first steam transatlantic passenger mail service.
• July 15 – The Austrian Empire, the United Kingdom, the Kingdom of Prussia, and the Russian Empire sign the Convention of London with the Sublime Porte, ruler of the Ottoman Empire.
• July 23
  • Pedro II is declared "of age" prematurely and begins to reassert central control in Brazil.
  • The Province of Canada is created by the Act of Union.
• August 10 – Fortsas hoax: A number of book collectors gather in Binche, Belgium, to attend a non-existent book auction of the late "Count of Fortsas".
• September 10 – Ottoman and British troops bombard Beirut and land troops on the coast to pressure Egyptian Muhammad Ali to retreat from the country.
• September 16 – Joseph Strutt hands over the deeds and papers concerning the Derby Arboretum, which is to become England's first public park.
• September 30 – The frigate Belle-Poule arrives in Cherbourg, bringing back the remains of Napoléon from Saint Helena to France. He is buried in the Invalides.

October–December

The frigate Belle-Poule brings back the remains of Napoléon to France.

• October 7 – Willem II becomes King of the Netherlands.
• October 14 – Maronite leader Bashir Shihab II surrenders to the British forces and goes into exile in Malta.
• November 4 – U.S. presidential election, 1840: William Henry Harrison defeats Martin Van Buren.
• December 7 – David Livingstone leaves Britain for Africa.
• December 15 – The corpse of Napoleon is placed in the Hotel des Invalides in Paris.
• December 21 – Stockport Viaduct is completed in North West England. It is one of the largest brick structures in Europe.

Date unknown

• By July – August Borsig completes the first steam locomotive built in Germany.
• Louis Agassiz publishes his Etudes sur les glaciers ("Study on Glaciers", 2 volumes), the first major scientific work to propose that the Earth has seen an ice age.
• Mount Allison University is founded in Sackville, New Brunswick, Canada.
• The Washingtonian Temperance Society is founded.
• The first English translation of Goethe's Theory of Colours by Charles Eastlake is published.
• J. M. W. Turner first displays his painting The Slave Ship.
• United States Census Bureau reports 6,000 free Negroes holding slaves in the nation.

Ongoing

• First Opium War (1839–1842)
• First Anglo-Afghan War (1839–1842)

Births

January–June

• January 3 – Father Damien, Belgian missionary priest (d. 1889)
• January 22 – Ernest Roland Wilberforce, English bishop (d. 1907)
• January 23 – Ernst Abbe, German physicist (d. 1905)
• January 26 – John Clayton Adams, British landscape artist (d. 1906)
• February 4 – Hiram Stevens Maxim, American firearms inventor (d. 1916)
• February 5 – John Boyd Dunlop, Scottish inventor (d. 1921)
• February 9 – William T. Sampson, American admiral (d. 1902)
• February 15 – Titu Maiorescu, Romanian Prime Minister (d. 1917)
• February 21 – Murad V, Ottoman Sultan (d. 1904)
• February 22 – August Bebel, German politician (d. 1913)
• February 23 – Carl Menger, Austrian economist (d. 1921)
• February 29 – John Philip Holland, Irish inventor (d. 1914)
• March 28 – Emin Pasha, German doctor and African administrator (d. 1892)
• March 31 – Benjamin Baker, English civil engineer (d. 1907)
• April 2 – Emile Zola, French writer (d. 1902)
• April 22 – Odilon Redon, French painter (d. 1916)
• April 27 – Edward Whymper, English mountaineer (d. 1911)
• May 7 – Pyotr Ilyich Tchaikovsky, Russian composer (d. 1893)
• May 13 – Alphonse Daudet, French writer (d. 1897)
• June 2 – Thomas Hardy, English writer (d. 1928)
• June 2 – Emile Munier, French artist (d. 1895)
• June 7 – Charlotte of Belgium, Princess of Belgium and Empress of Mexico (d. 1927)
• June 10 – Theodor Philipsen, Danish painter (d. 1920)
• June 13 – Augusta Lundin, Swedish fashion designer (d. 1919)
• June 21 – Edward Stanley Gibbons, English philatelist and founder of Stanley Gibbons Ltd (d. 1913)

July–December

• August 4 – Richard von Krafft-Ebing, German sexologist (d. 1902)
• September 27 – Alfred Thayer Mahan, United States Navy admiral and American geostrategist and historian (d. 1914)
• October 9 – Simeon Solomon, British artist (d. 1905)
• October 16 – Kuroda Kiyotaka, Prime Minister of Japan (d. 1900)
• November 7 – H. G. Haugan, Norwegian-born American railroad executive
• November 12 – Auguste Rodin, French sculptor (d. 1917)
• November 14 – Claude Monet, French painter (d. 1926)
• November 21 – Victoria, Princess Royal of the United Kingdom and Empress of Germany (d. 1901)
• November 29 – Rhoda Broughton, Welsh writer (d. 1920)

Deaths

January–June

• January 6 – Fanny Burney, English novelist (b. 1752)
• January 22 – Johann Friedrich Blumenbach, German anthropologist (b. 1752)
• February 13 – Nicolas Joseph Maison, French marshal and Minister of War (b. 1770)
• April 25 – Siméon-Denis Poisson, French mathematician, geometer, and physicist (b. 1781)
• May 1 – Joseph Williamson, philanthropist and builder of Williamson's tunnels (b. 1769)
• May 6 – Demetrius Augustine Gallitzin, Russian aristocrat and priest (b. 1770)
• May 7 – Caspar David Friedrich, German artist (b. 1774)
• May 14 – Carl Ludvig Engel, German-Finnish architect (b. 1778)
• May 26 – Sidney Smith, British admiral (b. 1764)
• May 27 – Nicolò Paganini, Italian violinist and composer (b. 1782)
• June 7 – King Frederick William III of Prussia (b. 1770)

July–December

• July 7 – Nikolai Stankevich, philosopher and poet (b. 1813)
• August 25 – Karl Leberecht Immermann, novelist and dramatist (b. 1796)
• September 11 – Jean-Gabriel Perboyre, Catholic missionary and martyr in China
• September 14 – Joseph Smith, Sr., father of Joseph Smith, Jr.
• September 18 – Constantine Samuel Rafinesque, polymath (b. 1783)
• September 20 – José Gaspar Rodríguez de Francia, the first leader of independent Paraguay (b. 1766)
• November 2 – Józef Kossakowski (colonel), Polish-Lithuanian statesman (b. 1771)