1691 (MDCXCI) was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday 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. As of the start of 1691, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.

Millennium: 2nd millennium
Centuries: 16th century17th century18th century
Decades: 1660s  1670s  1680s  – 1690s –  1700s  1710s  1720s
Years: 1688 1689 169016911692 1693 1694
1691 in other calendars
Gregorian calendar1691
MDCXCI
Ab urbe condita2444
Armenian calendar1140
ԹՎ ՌՃԽ
Assyrian calendar6441
Balinese saka calendar1612–1613
Bengali calendar1098
Berber calendar2641
English Regnal yearWill. & Mar. – 4 Will. & Mar.
Buddhist calendar2235
Burmese calendar1053
Byzantine calendar7199–7200
Chinese calendar庚午(Metal Horse)
4387 or 4327
    — to —
辛未年 (Metal Goat)
4388 or 4328
Coptic calendar1407–1408
Discordian calendar2857
Ethiopian calendar1683–1684
Hebrew calendar5451–5452
Hindu calendars
 - Vikram Samvat1747–1748
 - Shaka Samvat1612–1613
 - Kali Yuga4791–4792
Holocene calendar11691
Igbo calendar691–692
Iranian calendar1069–1070
Islamic calendar1102–1103
Japanese calendarGenroku 4
(元禄4年)
Javanese calendar1614–1615
Julian calendarGregorian minus 10 days
Korean calendar4024
Minguo calendar221 before ROC
民前221年
Nanakshahi calendar223
Thai solar calendar2233–2234
Tibetan calendar阳金马年
(male Iron-Horse)
1817 or 1436 or 664
    — to —
阴金羊年
(female Iron-Goat)
1818 or 1437 or 665

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Deaths

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