1820

1820 (MDCCCXX) was a leap year starting on Saturday in the Gregorian calendar and a leap year starting on Thursday in the Julian calendar.

Millennium:	2nd millennium
Centuries:	18th century – 19th century – 20th century
Decades:	1790s  1800s  1810s  – 1820s –  1830s  1840s  1850s
Years:	1817 1818 1819 – 1820 – 1821 1822 1823

1820 in other calendars

Gregorian calendar	1820 MDCCCXX
Ab urbe condita	2573
Armenian calendar	1269 ԹՎ ՌՄԿԹ
Assyrian calendar	6570
Balinese saka calendar	1741–1742
Bengali calendar	1227
Berber calendar	2770
British Regnal year	60 Geo. 3 – 1 Geo. 4
Buddhist calendar	2364
Burmese calendar	1182
Byzantine calendar	7328–7329
Chinese calendar	己卯年 (Earth Rabbit) 4516 or 4456     — to — 庚辰年 (Metal Dragon) 4517 or 4457
Coptic calendar	1536–1537
Discordian calendar	2986
Ethiopian calendar	1812–1813
Hebrew calendar	5580–5581
Hindu calendars
- Vikram Samvat	1876–1877
- Shaka Samvat	1741–1742
- Kali Yuga	4920–4921
Holocene calendar	11820
Igbo calendar	820–821
Iranian calendar	1198–1199
Islamic calendar	1235–1236
Japanese calendar	Bunsei 3 (文政３年)
Javanese calendar	1747–1748
Julian calendar	Gregorian minus 12 days
Korean calendar	4153
Minguo calendar	92 before ROC 民前92年
Nanakshahi calendar	352
Thai solar calendar	2362–2363
Tibetan calendar	阴土兔年 (female Earth-Rabbit) 1946 or 1565 or 793     — to — 阳金龙年 (male Iron-Dragon) 1947 or 1566 or 794

Events

• Venus de Milo discovered.
• Hans Christian Ørsted discovers the relationship between electricity and magnetism.

Births

• March 22 – John Brown, English cricketer (died 1893)
• May 12 – Florence Nightingale, Italian-born English nurse (died 1910)
• date unknown
  • Anne Bronte, English novelist (died 1849)
  • King Victor Emmanuel II of Italy (died 1873)
  • Joseph Whitaker, English publisher (died 1896)

Deaths

• George III of the United Kingdom (b. 1738)
• Daniel Boone (b. 1734)

Books

• The Sketch Book of Geoffrey Crayon, Gent. by Washington Irving