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1800

Millennium: 2nd millennium
Centuries:
Decades:
Years:
1800 by topic:
Arts and Sciences
ArchaeologyArchitectureArtLiterature (Poetry) – MusicScience
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AustraliaAustriaCanadaDenmarkFranceGreat BritainIrelandNorwayRussiaScotlandSwedenUnited States
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Birth and death categories
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Establishments and disestablishments categories
EstablishmentsDisestablishments
Works category
Works
1800 in various calendars
Gregorian calendar 1800
MDCCC
French Republican calendar 8–9
Ab urbe condita 2553
Armenian calendar 1249
ԹՎ ՌՄԽԹ
Assyrian calendar 6550
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(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


1800 (MDCCC) was an exceptional common year starting on Wednesday (dominical letter E) of the Gregorian calendar and a leap year starting on Sunday (dominical letter AG) of the Julian calendar, the 1800th year of the Common Era (CE) and Anno Domini (AD) designations, the 800th year of the 2nd millennium, the 100th and last year of the 18th century, and the 1st year of the 1800s decade. As of the start of 1800, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923. As of March 1 (O.S. February 18), when the Julian calendar acknowledged a leap day and the Gregorian calendar did not, the Julian calendar fell one day further behind, bringing the difference to 12 days.


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