1801

1801 (MDCCCI) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1801st year of the Common Era (CE) and Anno Domini (AD) designations, the 801st year of the 2nd millennium, the 1st year of the 19th century, and the 2nd year of the 1800s decade. As of the start of 1801, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.

1801 in other calendars

Gregorian calendar	1801 MDCCCI
French Republican calendar	9–10
Ab urbe condita	2554
Armenian calendar	1250 ԹՎ ՌՄԾ
Assyrian calendar	6551
Balinese saka calendar	1722–1723
Bengali calendar	1208
Berber calendar	2751
British Regnal year	41 Geo. 3 – 42 Geo. 3
Buddhist calendar	2345
Burmese calendar	1163
Byzantine calendar	7309–7310
Chinese calendar	庚申年 (Metal Monkey) 4497 or 4437     — to — 辛酉年 (Metal Rooster) 4498 or 4438
Coptic calendar	1517–1518
Discordian calendar	2967
Ethiopian calendar	1793–1794
Hebrew calendar	5561–5562
Hindu calendars
- Vikram Samvat	1857–1858
- Shaka Samvat	1722–1723
- Kali Yuga	4901–4902
Holocene calendar	11801
Igbo calendar	801–802
Iranian calendar	1179–1180
Islamic calendar	1215–1216
Japanese calendar	Kansei 13 (寛政１３年)
Javanese calendar	1727–1728
Julian calendar	Gregorian minus 12 days
Korean calendar	4134
Minguo calendar	111 before ROC 民前111年
Nanakshahi calendar	333
Thai solar calendar	2343–2344
Tibetan calendar	ལྕགས་ཕོ་སྤྲེ་ལོ་ (male Iron-Monkey) 1927 or 1546 or 774     — to — ལྕགས་མོ་བྱ་ལོ་ (female Iron-Bird) 1928 or 1547 or 775

Events

• Great Britain is united with Ireland to make the United Kingdom.

Deaths

• February 7 – Daniel Chodowiecki, Polish painter (b. 1726)
• March 21 – Andrea Luchesi, Italian composer (b. 1741)
• March 23 – Tsar Paul of Russia (b. 1754)
• March 25 – Novalis, German poet (b. 1772)
• March 28 – Ralph Abercromby, British general (b. 1734)
• April 2 – Thomas Dadford Junior, British engineer
• April 7 – Noël François de Wailly, French lexicographer (b. 1724)
• May 17 – William Heberden, English doctor (b. 1710)
• June 4 – Frederick Muhlenberg, first Speaker of the U.S. House of Representatives (b. 1750)
• June 14 – Benedict Arnold, American Revolution hero and traitor (b. 1741)
• September 19 – Johann Gottfried Koehler, German astronomer (b. 1745)
• October 3 – Philippe Henri, marquis de Ségur, Marshal of France (b. 1724)
• November 4 – William Shippen, American physician and Continental Congressman (b. 1536)
• November 5 – Motoori Norinaga, Japanese philologist and scholar (b. 1730)
• November 24 – Franz Moritz Graf von Lacy, Austrian field marshal (b. 1725)

Births

• January 3 – Gijsbert Haan, Dutch-American religious leader (d. 1874)
• February 1 – Thomas Cole, American artist (d. 1848)
• towards February 13 – János Kardos Hungarian Slovenes evangelic priest, teacher and writer (d. 1875)
• February 21 – John Henry Newman, English Roman Catholic Cardinal (d. 1890)
• May 11 – Henri Labrouste, French architect (d. 1875)
• June 1 – Brigham Young, American religious leader and colonizer (d. 1877)
• June 4 – James Pennethorne, English architect (d. 1871)
• June 14 – Heber C. Kimball, American religious leader (d. 1868)
• June 30 – Frederic Bastiat, French philosopher (d. 1850)
• July 5 – David Farragut, American naval commander (d.1870)
• July 29 – George Bradshaw, English publisher (d. 1853)
• October 12 – Friedrich Frey-Herosé, member of the Swiss Federal Council (d. 1873)
• November 3 – Karl Baedeker, German writer and publisher (d. 1859)
• November 3 – Vincenzo Bellini, Italian composer (d. 1835)
• November 10 – Vladimir Dal, Russian lexicographer (d. 1872)
• December 11 – Christian Dietrich Grabbe, German writer (d. 1836)