1691

1691 in othercalendars
Gregorian calendar	1691; MDCXCI
Ab urbe condita	2444
Armenian calendar	1140; ԹՎ ՌՃԽ
Assyrian calendar	6441
Balinese saka calendar	1612–1613
Bengali calendar	1098
Berber calendar	2641
English Regnal year	3Will.&Mar.– 4Will.&Mar.
Buddhist calendar	2235
Burmese calendar	1053
Byzantine calendar	7199–7200
Chinese calendar	Canh ngọNăm(MetalHorse); 4387 or 4327; — to —; Năm Tân Mùi(MetalGoat); 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	1612–1613
-Kali Yuga	4791–4792
Holocene calendar	11691
Igbo calendar	691–692
Iranian calendar	1069–1070
Islamic calendar	1102–1103
Japanese calendar	Genroku4; ( nguyên lộc ４ năm )
Javanese calendar	1614–1615
Julian calendar	Gregorian minus 10 days
Korean calendar	4024
Minguo calendar	221 beforeROC; Dân trước 221 năm
Nanakshahi calendar	223
Thai solar calendar	2233–2234
Tibetan calendar	Dương kim mã năm; (male Iron-Horse); 1817 or 1436 or 664; — to —; Âm kim dương năm; (female Iron-Goat); 1818 or 1437 or 665

Millennium:	2nd millennium
Centuries:	16th century–17th century–18th century
Decades:	1660s1670s1680s–1690s–1700s1710s1720s
Years:	168816891690–1691–169216931694

1691(MDCXCI) was acommon year starting on Mondayof theGregorian calendarand acommon year starting on Thursdayof theJulian calendar,the 1691st year of theCommon Era(CE) andAnno Domini(AD) designations, the 691st year of the2nd millennium,the 91st year of the17th century,and the 2nd year of the1690sdecade. As of the start of 1691, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.

Events

March 5– French troops under MarshalLouis-Francois de Boufflersbesiege the Spanish-held town ofMons
March 20–Leisler's Rebellion– New governor arrives inNew York–Jacob Leislersurrenders after standoff of several hours
March 29– Siege of Mons ends to the city’s surrender
May 6–Spanish inquisitioncondemns and forcibly baptizes 219JewsinPalma Majorca.When 37 try to escape the island, they are burned alive at the stake
May 16–Jacob Leisleris hanged fortreason
October 3–Treaty of Limerickwhich guaranteed civil rights toCatholicswas signed.(it was broken "before the ink was dry" )
Change ofemperorof theOttoman EmpirefromSuleiman II(1687-1691) toAhmed II(1691-1695).
Michel RolleinventsRolle's theorem,an essentialtheoremofmathematics.
InNew Englandthe two separate Colonies ofMassachusetts Bay ColonyandPlymouth Colonyare united into a single entity by an act of the King and Queen of England.