1086

1086 in various calendars
Gregorian calendar	1086; MLXXXVI
Ab urbe condita	1839
Armenian calendar	535; ԹՎ ՇԼԵ
Assyrian calendar	5836
Balinese saka calendar	1007–1008
Bengali calendar	493
Berber calendar	2036
English Regnal year	20 Will. 1 – 21 Will. 1
Buddhist calendar	1630
Burmese calendar	448
Byzantine calendar	6594–6595
Chinese calendar	乙丑年 (Wood Ox); 3782 or 3722; — to —; 丙寅年 (Fire Tiger); 3783 or 3723
Coptic calendar	802–803
Discordian calendar	2252
Ethiopian calendar	1078–1079
Hebrew calendar	4846–4847
Hindu calendars
- Vikram Samvat	1142–1143
- Shaka Samvat	1007–1008
- Kali Yuga	4186–4187
Holocene calendar	11086
Igbo calendar	86–87
Iranian calendar	464–465
Islamic calendar	478–479
Japanese calendar	Ōtoku 3; (応徳３年)
Javanese calendar	990–991
Julian calendar	1086; MLXXXVI
Korean calendar	3419
Minguo calendar	826 before ROC; 民前826年
Nanakshahi calendar	−382
Seleucid era	1397/1398 AG
Thai solar calendar	1628–1629
Tibetan calendar	阴木牛年; (female Wood-Ox); 1212 or 831 or 59; — to —; 阳火虎年; (male Fire-Tiger); 1213 or 832 or 60

Millennium:	2nd millennium
Centuries:	10th century; 11th century ; 12th century;
Decades:	1060s; 1070s; 1080s; 1090s; 1100s;
Years:	1083; 1084; 1085; 1086; 1087; 1088; 1089;

Pope Victor III (c. 1026–1087)

Year 1086 (MLXXXVI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.

Events

October 23 – Battle of Sagrajas: Spanish forces under King Alfonso VI (the Brave) of Castile are defeated by the Moors and their allies, the Almoravids, who had been invited to help on orders by Emir Abbad III.
Norman forces under Count Roger I (Bosso) conquer Syracuse, the last Muslim stronghold in Sicily.^[1]

August 1 – King William I (the Conqueror) calls for a meeting at Old Sarum, where he invites his major vassals and tenants-in-chief to swear allegiance to him. The oath is known as the Oath of Salisbury.
The Domesday Book is completed, which is drawn up on the orders of William I. It describes in detail the landholdings and resources in England.
The population in England is estimated to be 1.25 million citizens with 10% living in boroughs.^[2]

Summer – Suleiman ibn Qutulmish, ruler of the Rum Sultanate, is killed by Emir Tutush I near Antioch. Suleiman's 7-year-old son Kilij Arslan is captured and transferred as hostage to Isfahan (modern Iran).
Sultan Malik-Shah I rebuilds the Imam Ali Mosque in Najaf (modern Iraq), after it was destroyed by fire.

May 24 – Pope Victor III succeeds Gregory VII as the 158th pope of the Catholic Church, though he does not accept election until 1087.

^ Dobson, R. B. (2000). Encyclopedia of the Middle Ages. New York: Routledge. p. 1349. ISBN 1-57958-282-6.
^ W.G. Hoskins, "The Making of the English Landscape", Hodder & Stoughton 1955, also Pelican Books 1970.
^ "Henry V | Holy Roman emperor". Encyclopedia Britannica. Retrieved October 21, 2020.

Gregorian calendar	1086 MLXXXVI
Ab urbe condita	1839
Armenian calendar	535 ԹՎ ՇԼԵ
Assyrian calendar	5836
Balinese saka calendar	1007–1008
Bengali calendar	493
Berber calendar	2036
English Regnal year	20 Will. 1 – 21 Will. 1
Buddhist calendar	1630
Burmese calendar	448
Byzantine calendar	6594–6595
Chinese calendar	乙丑年 (Wood Ox) 3782 or 3722 — to — 丙寅年 (Fire Tiger) 3783 or 3723
Coptic calendar	802–803
Discordian calendar	2252
Ethiopian calendar	1078–1079
Hebrew calendar	4846–4847
Hindu calendars
- Vikram Samvat	1142–1143
- Shaka Samvat	1007–1008
- Kali Yuga	4186–4187
Holocene calendar	11086
Igbo calendar	86–87
Iranian calendar	464–465
Islamic calendar	478–479
Japanese calendar	Ōtoku 3 (応徳３年)
Javanese calendar	990–991
Julian calendar	1086 MLXXXVI
Korean calendar	3419
Minguo calendar	826 before ROC 民前826年
Nanakshahi calendar	−382
Seleucid era	1397/1398 AG
Thai solar calendar	1628–1629
Tibetan calendar	阴木牛年 (female Wood-Ox) 1212 or 831 or 59 — to — 阳火虎年 (male Fire-Tiger) 1213 or 832 or 60

Millennium:	2nd millennium
Centuries:	10th century 11th century 12th century
Decades:	1060s 1070s 1080s 1090s 1100s
Years:	1083 1084 1085 1086 1087 1088 1089