|Covid-19|Goryeo and the Liao Dynasty exchange embassies, following a seven-year territorial dispute.
The massive Kandariya Mahadeva Hindu Temple is completed, in the Chandela capital of Khajuraho.
The city of Saint-Germain-en-Laye is founded.
Henry II of Germany conducts his third Italian military campaign.
Canute the Great codifies the laws of England.
Zhang Zai, Song Dynasty Chinese Neo-Confucian philosopher and cosmologist (d. 1077)
Su Song, famous Song Dynasty Chinese scientist and engineer (d. 1101)
June 12 – Lyfing, Archbishop of Canterbury
Ferdowsi Tousi, Persian epic poet (b. 935)
Leif Ericson, Icelandic explorer
Fan Kuan, Chinese landscape painter
Year 1020 (MXX) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar.
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