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Millennium: 2nd millennium
1728 in various calendars
Gregorian calendar 1728
Ab urbe condita 2481
Armenian calendar 1177
Assyrian calendar 6478
Balinese saka calendar 1649–1650
Bengali calendar 1135
Berber calendar 2678
British Regnal year Geo. 2 – 2 Geo. 2
Buddhist calendar 2272
Burmese calendar 1090
Byzantine calendar 7236–7237
Chinese calendar 丁未(Fire Goat)
4424 or 4364
    — to —
戊申年 (Earth Monkey)
4425 or 4365
Coptic calendar 1444–1445
Discordian calendar 2894
Ethiopian calendar 1720–1721
Hebrew calendar 5488–5489
Hindu calendars
 - Vikram Samvat 1784–1785
 - Shaka Samvat 1649–1650
 - Kali Yuga 4828–4829
Holocene calendar 11728
Igbo calendar 728–729
Iranian calendar 1106–1107
Islamic calendar 1140–1141
Japanese calendar Kyōhō 13
Javanese calendar 1652–1653
Julian calendar Gregorian minus 11 days
Korean calendar 4061
Minguo calendar 184 before ROC
Nanakshahi calendar 260
Thai solar calendar 2270–2271
Tibetan calendar 阴火羊年
(female Fire-Goat)
1854 or 1473 or 701
    — to —
(male Earth-Monkey)
1855 or 1474 or 702
James Bradley calculates the speed of light using stellar aberration.

1728 (MDCCXXVIII) was a leap year starting on Thursday of the Gregorian calendar and a leap year starting on Monday of the Julian calendar, the 1728th year of the Common Era (CE) and Anno Domini (AD) designations, the 728th year of the 2nd millennium, the 28th year of the 18th century, and the 9th year of the 1720s decade. As of the start of 1728, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.




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  1. ^ "The history of payments in the UK". BBC News. 2009-02-16. Retrieved 2016-02-25.
  2. ^ Delambre, J. B. (1827). Histoire de l'astronomie au dix-huitième siècle. Paris: Bachelier.
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