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Millennium: 2nd millennium
November 2: The Russian Empire is created as the Tsar Peter the Great is proclaimed "Tsar of all the Russias". (1858 painting by Stanisław Chlebowski)
1721 in various calendars
Gregorian calendar1721
Ab urbe condita2474
Armenian calendar1170
Assyrian calendar6471
Balinese saka calendar1642–1643
Bengali calendar1128
Berber calendar2671
British Regnal yearGeo. 1 – 8 Geo. 1
Buddhist calendar2265
Burmese calendar1083
Byzantine calendar7229–7230
Chinese calendar庚子年 (Metal Rat)
4418 or 4211
    — to —
辛丑年 (Metal Ox)
4419 or 4212
Coptic calendar1437–1438
Discordian calendar2887
Ethiopian calendar1713–1714
Hebrew calendar5481–5482
Hindu calendars
 - Vikram Samvat1777–1778
 - Shaka Samvat1642–1643
 - Kali Yuga4821–4822
Holocene calendar11721
Igbo calendar721–722
Iranian calendar1099–1100
Islamic calendar1133–1134
Japanese calendarKyōhō 6
Javanese calendar1645–1646
Julian calendarGregorian minus 11 days
Korean calendar4054
Minguo calendar191 before ROC
Nanakshahi calendar253
Thai solar calendar2263–2264
Tibetan calendar阳金鼠年
(male Iron-Rat)
1847 or 1466 or 694
    — to —
(female Iron-Ox)
1848 or 1467 or 695
August 18: The siege of Shamakhi ends in Persia.

1721 (MDCCXXI) was a common year starting on Wednesday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1721st year of the Common Era (CE) and Anno Domini (AD) designations, the 721st year of the 2nd millennium, the 21st year of the 18th century, and the 2nd year of the 1720s decade. As of the start of 1721, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.




July –September[edit]

October –December[edit]

Date unknown[edit]


Roger Sherman


Marguerite Louise d'Orléans
Alexander Selkirk


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  2. ^ Frank Sherry, Raiders and Rebels: The Golden Age of Piracy (Quill, 1986) p15
  3. ^ Breverton, Terry (2004). Black Bart Roberts: The Greatest Pirate of Them All. Gretna, LA: Pelican Publishing. p. 57. ISBN 1-58980-233-0.
  4. ^ "The Boston Inoculation Controversy of 1721-1722: An Incident in the History of Race", by Margo Minardi, The William and Mary Quarterly (January 2004)
  5. ^ John L. Kessell, Spain in the Southwest: A Narrative History of Colonial New Mexico, Arizona, Texas, and California (University of Oklahoma Press, 2013) p217
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  7. ^ Gordon, Alden R. (2003). "Searching for the Elusive Madame de Pompadour". Eighteenth-Century Studies. 37 (1): 95. doi:10.1353/ecs.2003.0062. ISSN 0013-2586. JSTOR 25098031. S2CID 144477737.