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 century19th century20th century
Decades: 1790s  1800s  1810s  – 1820s –  1830s  1840s  1850s
Years: 1817 1818 181918201821 1822 1823
1820 in other calendars
Gregorian calendar1820
MDCCCXX
Ab urbe condita2573
Armenian calendar1269
ԹՎ ՌՄԿԹ
Assyrian calendar6570
Balinese saka calendar1741–1742
Bengali calendar1227
Berber calendar2770
British Regnal year60 Geo. 3 – 1 Geo. 4
Buddhist calendar2364
Burmese calendar1182
Byzantine calendar7328–7329
Chinese calendar己卯(Earth Rabbit)
4516 or 4456
    — to —
庚辰年 (Metal Dragon)
4517 or 4457
Coptic calendar1536–1537
Discordian calendar2986
Ethiopian calendar1812–1813
Hebrew calendar5580–5581
Hindu calendars
 - Vikram Samvat1876–1877
 - Shaka Samvat1741–1742
 - Kali Yuga4920–4921
Holocene calendar11820
Igbo calendar820–821
Iranian calendar1198–1199
Islamic calendar1235–1236
Japanese calendarBunsei 3
(文政3年)
Javanese calendar1747–1748
Julian calendarGregorian minus 12 days
Korean calendar4153
Minguo calendar92 before ROC
民前92年
Nanakshahi calendar352
Thai solar calendar2362–2363
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

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Births

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Deaths

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