1023

Millennium:	2nd millennium
Centuries:	10th century – 11th century – 12th century
Decades:	990s  1000s  1010s  – 1020s –  1030s  1040s  1050s
Years:	1020 1021 1022 – 1023 – 1024 1025 1026

1023 by topic
Arts, history, and science
Archaeology Architecture Art Literature Poetry Music Science
Countries
Lists of leaders
State leaders Colonial governors Religious leaders
Birth and death categories
Births Deaths
Establishments and disestablishments categories
Establishments Disestablishments
Works category
Works

1023 (MXXIII) was a common year starting on Tuesday of the Julian calendar, the 1023rd year of the Common Era (CE) and Anno Domini (AD) designations, the 23rd year of the 2nd millennium, the 23rd year of the 11th century, and the 4th year of the 1020s decade. As of the start of 1023, the Gregorian calendar was 6 days ahead of the Julian calendar, which was the dominant calendar of the time.

Kou Zhun ('Pingzhong) '(c. 961–1023)

Europe

• The Judge-Governor of Seville takes advantage of the break up of the Caliphate of Córdoba, and takes power as Abbad I, founding the Abbadid dynasty.
• Abd ar-Rahman V becomes Caliph at Córdoba.

Asia

• The Ghaznavid Empire occupies Transoxiana.

Africa

• Soon after returning from Mecca, the Tarsina king of Zanata, a mountain kingdom between Algeria and Morocco, is killed in battle.

Births

• William VII, Duke of Aquitaine (d. 1058)

Deaths

• Wulfstan II, Archbishop of York
• Oda of Haldensleben, wife of Mieszko I of Poland
• Llywelyn ap Seisyll, King of Gwynedd
• Sitt al-Mulk, regent of the Fatimid Caliphate (1021 to 1023) for ʻAlī az-Zāhir, the Seventh Caliph (1021 to 1036)