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Millennium: 2nd millennium
Centuries: 16th century17th century18th century
Decades: 1660s  1670s  1680s  – 1690s –  1700s  1710s  1720s
Years: 1688 1689 169016911692 1693 1694
1691 by topic:
Arts and Science
Architecture - Art - Literature - Music - Science
Lists of leaders
Colonial governors - State leaders
Birth and death categories
Births - Deaths
Establishments and disestablishments categories
Establishments - Disestablishments
Works category
1691 in other calendars
Gregorian calendar 1691
Ab urbe condita 2444
Armenian calendar 1140
Assyrian calendar 6441
Bengali calendar 1098
Berber calendar 2641
English Regnal year Will. & Mar. – 4 Will. & Mar.
Buddhist calendar 2235
Burmese calendar 1053
Byzantine calendar 7199–7200
Chinese calendar 庚午(Metal Horse)
4387 or 4327
    — to —
辛未年 (Metal Goat)
4388 or 4328
Coptic calendar 1407–1408
Discordian calendar 2857
Ethiopian calendar 1683–1684
Hebrew calendar 5451–5452
Hindu calendars
 - Vikram Samvat 1747–1748
 - Shaka Samvat 1613–1614
 - Kali Yuga 4792–4793
Holocene calendar 11691
Igbo calendar 691–692
Iranian calendar 1069–1070
Islamic calendar 1102–1103
Japanese calendar Genroku 4
Julian calendar Gregorian minus 10 days
Korean calendar 4024
Minguo calendar 221 before ROC
Thai solar calendar 2233–2234

1691 (MDCXCI) was a common year starting on Monday (dominical letter G) of the Gregorian calendar and a common year starting on Thursday (dominical letter D) of the Julian calendar, the 1691st year of the Common Era (CE) and Anno Domini (AD) designations, the 691st year of the 2nd millennium, the 91st year of the 17th century, and the 2nd year of the 1690s decade. Note that the Julian day for 1691 is 10 calendar days difference, which continued to be used from 1582 until the complete conversion of the Gregorian calendar was entirely done in 1929.




Date unknown




This is one of the numbers, in certain fonts, that can be read upside down, and displays the same number.