1020

Millennium:	2nd millennium
Centuries:	10th century – 11th century – 12th century
Decades:	990s  1000s  1010s  – 1020s –  1030s  1040s  1050s
Years:	1017 1018 1019 – 1020 – 1021 1022 1023

1020 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

1020 (MXX) was a leap year starting on Friday of the Julian calendar, the 1020th year of the Common Era (CE) and Anno Domini (AD) designations, the 20th year of the 2nd millennium, the 20th year of the 11th century, and the 1st year of the 1020s decade. As of the start of 1020, the Gregorian calendar was 6 days ahead of the Julian calendar, which was the dominant calendar of the time.

Asia

• Goryeo and the Liao Dynasty exchange embassies following a seven-year territorial disagreement.
• The massive Kandariya Mahadeva Hindu Temple is completed in the Chandela capital of Khajuraho.

Europe

• The city of Saint-Germain-en-Laye is founded.
• Henry II of Germany starts his third Italian military campaign .
• Canute the Great establishes the laws of England.

Births

• Zhang Zai, Song Dynasty Chinese Neo-Confucian philosopher and cosmologist (d. 1077)
• Su Song, famous Song Dynasty Chinese scientist and engineer (d. 1101)

Deaths

• June 12 – Lyfing, Archbishop of Canterbury
• Ferdowsi Tousi, Persian epic poet (b. 935)
• Leif Ericson, Icelandic explorer
• Fan Kuan, Chinese landscape painter