1820

1820 in othercalendars
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	60Geo. 3– 1Geo. 4
Buddhist calendar	2364
Burmese calendar	1182
Byzantine calendar	7328–7329
Chinese calendar	Kỷ mãoNiên(EarthRabbit); 4516 or 4456; — to —; Canh thần niên(MetalDragon); 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	Bunsei3; ( văn chính ３ niên )
Javanese calendar	1747–1748
Julian calendar	Gregorian minus 12 days
Korean calendar	4153
Minguo calendar	92 beforeROC; Dân tiền 92 niên
Nanakshahi calendar	352
Thai solar calendar	2362–2363
Tibetan calendar	Âm thổ thỏ niên; (female Earth-Rabbit); 1946 or 1565 or 793; — to —; Dương kim long niên; (male Iron-Dragon); 1947 or 1566 or 794

Millennium:	2nd millennium
Centuries:	18th century–19th century–20th century
Decades:	1790s1800s1810s–1820s–1830s1840s1850s
Years:	181718181819–1820–182118221823

Events[change|change source]

March 22–John Brown,English cricketer (died1893)
May 12–Florence Nightingale,Italian-born English nurse (died1910)
date unknown
- Anne Bronte,English novelist (died1849)
- KingVictor Emmanuel II of Italy(died1873)
- Joseph Whitaker,English publisher (died1896)