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Millennium: 2nd millennium
Centuries: 17th century18th century19th century
Decades: 1750s  1760s  1770s  – 1780s –  1790s  1800s  1810s
Years: 1778 1779 178017811782 1783 1784
1781 by topic:
Arts and Sciences
ArchaeologyArchitectureArtLiterature (Poetry) – MusicScience
CanadaCanadaDenmarkFranceGreat BritainIrelandNorwayRussiaScotlandSwedenUnited States
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Birth and death categories
Establishments and disestablishments categories
Works category
1781 in other calendars
Gregorian calendar 1781
Ab urbe condita 2534
Armenian calendar 1230
Assyrian calendar 6531
Bengali calendar 1188
Berber calendar 2731
British Regnal year 21 Geo. 3 – 22 Geo. 3
Buddhist calendar 2325
Burmese calendar 1143
Byzantine calendar 7289–7290
Chinese calendar 庚子(Metal Rat)
4477 or 4417
    — to —
辛丑年 (Metal Ox)
4478 or 4418
Coptic calendar 1497–1498
Discordian calendar 2947
Ethiopian calendar 1773–1774
Hebrew calendar 5541–5542
Hindu calendars
 - Vikram Samvat 1837–1838
 - Shaka Samvat 1703–1704
 - Kali Yuga 4882–4883
Holocene calendar 11781
Igbo calendar 781–782
Iranian calendar 1159–1160
Islamic calendar 1195–1196
Japanese calendar An'ei 10 / Tenmei 1
Julian calendar Gregorian minus 11 days
Korean calendar 4114
Minguo calendar 131 before ROC
Thai solar calendar 2323–2324

1781 (MDCCLXXXI) was a common year starting on Monday (dominical letter G) of the Gregorian calendar and a common year starting on Friday (dominical letter C) of the Julian calendar, the 1781st year of the Common Era (CE) and Anno Domini (AD) designations, the 781st year of the 2nd millennium, the 81st year of the 18th century, and the 2nd year of the 1780s decade. Note that the Julian day for 1781 is 11 calendar days difference, which continued to be used from 1582 until the complete conversion of the Gregorian calendar was entirely done in 1929.



March 13: Uranus discovered [image in false color].


Date unknown


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  1. Williams, Hywel (2005). Cassell's Chronology of World History. London: Weidenfeld & Nicolson. pp. 333–334. ISBN 0-304-35730-8.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  2. Penguin Pocket On This Day. Penguin Reference Library. 2006. ISBN 0-14-102715-0.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. "BBC History British History Timeline". Archived from the original on September 9, 2007. Retrieved September 3, 2007.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  4. "History & Facts". Washington & Jefferson College. Archived from the original on July 28, 2011.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>

Further reading

  • John Blair; J. Willoughby Rosse (1856). "1781". Blair's Chronological Tables. London: H.G. Bohn – via Hathi Trust.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>