1728

Millennium: 2nd millennium
Centuries:
Decades:
Years:
January 29: The Beggar's Opera premieres in London (1731 painting by William Hogarth).
1728 in various calendars
Gregorian calendar1728
MDCCXXVIII
Ab urbe condita2481
Armenian calendar1177
ԹՎ ՌՃՀԷ
Assyrian calendar6478
Balinese saka calendar1649–1650
Bengali calendar1135
Berber calendar2678
British Regnal yearGeo. 2 – 2 Geo. 2
Buddhist calendar2272
Burmese calendar1090
Byzantine calendar7236–7237
Chinese calendar丁未年 (Fire Goat)
4425 or 4218
    — to —
戊申年 (Earth Monkey)
4426 or 4219
Coptic calendar1444–1445
Discordian calendar2894
Ethiopian calendar1720–1721
Hebrew calendar5488–5489
Hindu calendars
 - Vikram Samvat1784–1785
 - Shaka Samvat1649–1650
 - Kali Yuga4828–4829
Holocene calendar11728
Igbo calendar728–729
Iranian calendar1106–1107
Islamic calendar1140–1141
Japanese calendarKyōhō 13
(享保13年)
Javanese calendar1652–1653
Julian calendarGregorian minus 11 days
Korean calendar4061
Minguo calendar184 before ROC
民前184年
Nanakshahi calendar260
Thai solar calendar2270–2271
Tibetan calendar阴火羊年
(female Fire-Goat)
1854 or 1473 or 701
    — to —
阳土猴年
(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.