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|1059 by topic|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Ab urbe condita||1812|
|Balinese saka calendar||980–981|
|English Regnal year||N/A|
|Chinese calendar||戊戌年 (Earth Dog)
3755 or 3695
— to —
己亥年 (Earth Pig)
3756 or 3696
|- Vikram Samvat||1115–1116|
|- Shaka Samvat||980–981|
|- Kali Yuga||4159–4160|
|Japanese calendar||Kōhei 2
|Minguo calendar||853 before ROC
|Seleucid era||1370/1371 AG|
|Thai solar calendar||1601–1602|
1185 or 804 or 32
— to —
1186 or 805 or 33
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- January 24 – Pope Nicholas II succeeds Pope Stephen IX as the 155th Pope, installed in Rome in opposition to Antipope Benedict X.
- April 13 – Pope Nicholas II, with the agreement of the Lateran Council, issues the papal bull In nomine Domini, making the College of Cardinals the sole voters in the papal conclave for the election of popes.
- August – Robert Guiscard signs the Treaty of Melfi, with Pope Nicholas II.
- November 22 – Isaac I Komnenos resigns as Byzantine Emperor, appointing Constantine Ducas as his successor.
- Muhammad bin Dawud, known as Alp Arslan, succeeds his father Chaghri Beg, as governor of Khorasan.
- Peter Krešimir IV is crowned King of Croatia and Dalmatia.
- June 29 – Bernard II, Duke of Saxony (b. c. 995)
- King Peter Urseolo of Hungary
- Eilika of Schweinfurt, Duchess consort of Saxony (b. 1005) (approximate date)
- Michael Cerularius, Patriarch of Constantinople
- Michael VI Bringas, Byzantine Emperor, reigned 1056-1057