1020

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.

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 in other calendars

Gregorian calendar	1020 MXX
Ab urbe condita	1773
Armenian calendar	469 ԹՎ ՆԿԹ
Assyrian calendar	5770
Balinese saka calendar	941–942
Bengali calendar	427
Berber calendar	1970
English Regnal year	N/A
Buddhist calendar	1564
Burmese calendar	382
Byzantine calendar	6528–6529
Chinese calendar	己未年 (Earth Goat) 3716 or 3656     — to — 庚申年 (Metal Monkey) 3717 or 3657
Coptic calendar	736–737
Discordian calendar	2186
Ethiopian calendar	1012–1013
Hebrew calendar	4780–4781
Hindu calendars
- Vikram Samvat	1076–1077
- Shaka Samvat	941–942
- Kali Yuga	4120–4121
Holocene calendar	11020
Igbo calendar	20–21
Iranian calendar	398–399
Islamic calendar	410–411
Japanese calendar	Kannin 4 (寛仁４年)
Javanese calendar	922–923
Julian calendar	1020 MXX
Korean calendar	3353
Minguo calendar	892 before ROC 民前892年
Nanakshahi calendar	−448
Seleucid era	1331/1332 AG
Thai solar calendar	1562–1563
Tibetan calendar	ས་མོ་ལུག་ལོ་ (female Earth-Sheep) 1146 or 765 or −7     — to — ལྕགས་ཕོ་སྤྲེ་ལོ་ (male Iron-Monkey) 1147 or 766 or −6

Events

By place

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