1820

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

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

Events

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

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)