1086

1086 (MLXXXVI) was a common year starting on Thursday of the Julian calendar, the 1086th year of the Common Era (CE) and Anno Domini (AD) designations, the 86th year of the 2nd millennium, the 86th year of the 11th century, and the 7th year of the 1080s decade. As of the start of 1086, the Gregorian calendar was 6 days ahead of the Julian calendar, which was the dominant calendar of the time.

Pope Victor III (c. 1026–1087)

1086 in other 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	ཤིང་མོ་གླང་ལོ་ (female Wood-Ox) 1212 or 831 or 59     — to — མེ་ཕོ་སྟག་ལོ་ (male Fire-Tiger) 1213 or 832 or 60

Events

• The Domesday Book is completed in England.
• Emperor Shirakawa of Japan starts his cloistered rule.
• The Imam Ali Mosque is rebuilt by the Seljuk Malik Shah I after being destroyed by fire.
• May 24 — Pope Victor III succeeds Pope Gregory VII as the 158th pope, though he does not accept election until May 9, 1087.
• October 23 – Battle of az-Zallaqah: Alfonso VI of León and Castile is defeated by the Almoravids, who had been called into Spain by Abbad III of Sevilla.

Deaths

• May 21 — Richilde, Countess of Mons and Hainaut
• May 21 — Wang Anshi, Chinese statesman, economist and poet (b. 1021)
• July 17 — King Canute IV of Denmark (b. 1043)
• September 25 — William VIII, Duke of Aquitaine (b. 1025)
• Sima Guang, Chinese historian and statesman (b. 1019)