1800
year
1800 (MDCCC) was an exceptional common year starting on Wednesday in the Gregorian calendar and a leap year starting on Sunday in the Julian calendar. It was the last year of the 18th century.
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 17th century – 18th century – 19th century |
| Decades: | 1770s 1780s 1790s – 1800s – 1810s 1820s 1830s |
| Years: | 1797 1798 1799 – 1800 – 1801 1802 1803 |
| Gregorian calendar | 1800 MDCCC |
| French Republican calendar | 8–9 |
| Ab urbe condita | 2553 |
| Armenian calendar | 1249 ԹՎ ՌՄԽԹ |
| Assyrian calendar | 6550 |
| Balinese saka calendar | 1721–1722 |
| Bengali calendar | 1207 |
| Berber calendar | 2750 |
| British Regnal year | 40 Geo. 3 – 41 Geo. 3 |
| Buddhist calendar | 2344 |
| Burmese calendar | 1162 |
| Byzantine calendar | 7308–7309 |
| Chinese calendar | 己未年 (Earth Goat) 4496 or 4436 — to — 庚申年 (Metal Monkey) 4497 or 4437 |
| Coptic calendar | 1516–1517 |
| Discordian calendar | 2966 |
| Ethiopian calendar | 1792–1793 |
| Hebrew calendar | 5560–5561 |
| Hindu calendars | |
| - Vikram Samvat | 1856–1857 |
| - Shaka Samvat | 1721–1722 |
| - Kali Yuga | 4900–4901 |
| Holocene calendar | 11800 |
| Igbo calendar | 800–801 |
| Iranian calendar | 1178–1179 |
| Islamic calendar | 1214–1215 |
| Japanese calendar | Kansei 12 (寛政１２年) |
| Javanese calendar | 1726–1727 |
| Julian calendar | Gregorian minus 11 or 12 days |
| Korean calendar | 4133 |
| Minguo calendar | 112 before ROC 民前112年 |
| Nanakshahi calendar | 332 |
| Thai solar calendar | 2342–2343 |
| Tibetan calendar | 阴土羊年 (female Earth-Goat) 1926 or 1545 or 773 — to — 阳金猴年 (male Iron-Monkey) 1927 or 1546 or 774 |
Events
change- World population hits 1 billion.
- March 14 – Cardinal Barnaba Chiaramonti is elected pope as Pius VII.
- March 21 – Pius VII is ordained.
- April 24 – U.S. Library of Congress founded.
- May 5 – Great Britain passes the Act of Union to join Great Britain and Ireland into the United Kingdom of Great Britain and Ireland to take effect on 1 January 1801. The act is signed by King George III in August.
- May 15 – Napoleon Bonaparte crosses the Alps and invades Italy.
- June 14 – Battle of Marengo, Napoleon defeats the Austrian troops near Marengo, Italy.
- June 2 – First smallpox vaccination in North America, at Trinity, Newfoundland.
- June 27 – Pascha Jussuf Karamanli of Tripoli declares war on Sweden by having the flagpole on the consulate chopped down.
- September 5 – The island of Malta, that was occupied by the French, is conquered by British troops.
- November 1 – U.S. President John Adams becomes the first President of the United States to live in the Executive Mansion (later renamed the White House).
- November 17 – The U.S. Congress holds its first Washington, DC session.
- December 3 – Battle of Hohenlinden, the French army defeats the Austrian troops.
- December 24 – An assault on Napoleon Bonaparte fails in Paris.
- December 24 – Pierre Coudrin and Henriette Aymer de la Chevalerie found the Congregation of the Sacred Hearts of Jesus and Mary in Paris.
- Invention of the voltaic pile by Alessandro Volta: the first chemical battery
- The infrared radiation is discovered by Wilhelm Herschel.
- The Althing of Iceland, the world's oldest parliament, is abolished.
Births
- for more information, see Category:1800 births.
Deaths
- for more information, see Category:1800 deaths.