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.

Millennium:	2nd millennium
Centuries:	10th century – 11th century – 12th century
Decades:	1050s  1060s  1070s  – 1080s –  1090s  1100s  1110s
Years:	1083 1084 1085 – 1086 – 1087 1088 1089

Pope Victor III (c. 1026–1087)

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)