1021

1021 in various calendars
Gregorian calendar	1021; MXXI
Ab urbe condita	1774
Armenian calendar	470; ԹՎ ՆՀ
Assyrian calendar	5771
Balinese saka calendar	942–943
Bengali calendar	428
Berber calendar	1971
English Regnal year	N/A
Buddhist calendar	1565
Burmese calendar	383
Byzantine calendar	6529–6530
Chinese calendar	庚申年 (Metal Monkey); 3718 or 3511; — to —; 辛酉年 (Metal Rooster); 3719 or 3512
Coptic calendar	737–738
Discordian calendar	2187
Ethiopian calendar	1013–1014
Hebrew calendar	4781–4782
Hindu calendars
- Vikram Samvat	1077–1078
- Shaka Samvat	942–943
- Kali Yuga	4121–4122
Holocene calendar	11021
Igbo calendar	21–22
Iranian calendar	399–400
Islamic calendar	411–412
Japanese calendar	Kannin 5 / Jian 1; (治安元年)
Javanese calendar	923–924
Julian calendar	1021; MXXI
Korean calendar	3354
Minguo calendar	891 before ROC; 民前891年
Nanakshahi calendar	−447
Seleucid era	1332/1333 AG
Thai solar calendar	1563–1564
Tibetan calendar	阳金猴年; (male Iron-Monkey); 1147 or 766 or −6; — to —; 阴金鸡年; (female Iron-Rooster); 1148 or 767 or −5

Millennium:	2nd millennium
Centuries:	10th century; 11th century ; 12th century;
Decades:	1000s; 1010s; 1020s ; 1030s; 1040s;
Years:	1018; 1019; 1020; 1021 ; 1022; 1023; 1024;

Year 1021 (MXXI) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar.

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Events

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Europe

November – Emperor Henry II conducts his fourth Italian military campaign. He crosses the Brenner Pass with a 60,000-strong army, and reaches Verona, where he receives Lombard levies. Henry proceeds to Mantua and then into Ravenna, to spend Christmas there.
The Taifa of Valencia, a Moorish kingdom in Al-Andalus (modern Spain), becomes independent from the Caliphate of Córdoba (approximate date).

Africa

13 February – On one of his habitual night rides in the outskirts of Cairo, the Fatimid caliph al-Hakim bi-Amr Allah disappears, most likely assassinated by disaffected palace factions, apparently involving his sister, Sitt al-Mulk.^[1]
26 March – On the feast of Eid al-Adha, the death of al-Hakim, kept secret for six weeks, is announced, along with the succession of his son, al-Zahir li-i'zaz Din Allah. On the same day, al-Hakim's designated heir, Abd al-Rahim ibn Ilyas, is arrested in Damascus and brought to Egypt.^[2]
The last evidence of indigenous Christian and non-Arabophone culture in Tripolitania (modern Libya) is seen.^[vague]^[3]

Asia

Senekerim-Hovhannes Artsruni, king of Vaspurakan (Greater Armenia), surrenders his kingdom to the Byzantine Empire. In return, he receives Sebasteia and becomes governor of Cappadocia.^[4]
Battle of Shirimni, the Byzantine Empire under Basil II defeats the Kingdom of Georgia under Giorgi I at Shirimni, at the Lake Palakazio, modern Lake Çıldır, Turkey
Hovhannes-Smbat III, King of the Armenian kingdom of Ani, is attacked by his younger brother Ashot IV, and loses much power to him, becoming concurrent king of outlying territories.
Emperor Rajendra Chola I extends his influence of the Chola Empire to the banks of the Ganges River (North India) and invades Bengal.
Sultan Mahmud of Ghazni appoints Malik Ayaz to the throne, making Lahore (modern Pakistan) the capital of the Ghaznavid Empire.
The Chinese capital city of Kaifeng has some half a million residents by this year. Including all those present in the nine designated suburbs, the population is over a million people.

North America

Vikings known to be occupying L'Anse aux Meadows on Newfoundland (island).^[5]

Births

December 8 – Wang Anshi, Chinese chancellor (d. 1086)
Eudokia Makrembolitissa, Byzantine empress (d. 1096)
Fujiwara no Kanshi, Japanese empress consort (d. 1102)
Wugunai, Chinese chieftain of the Wanyan tribe (d. 1074)

Deaths

February 13 – Al-Hakim bi-Amr Allah, Fatimid caliph (b. 985)
March 5 – Arnulf, French archbishop and illegitimate son of Lothair III
March 16 – Heribert, archbishop of Cologne (b. c. 970)
July 7 – Fujiwara no Akimitsu, Japanese bureaucrat (b. 944)
August 17 – Erkanbald, German abbot and archbishop
August 29 – Minamoto no Yorimitsu, Japanese nobleman (b. 948)
Fujiwara no Yoshikane, Japanese nobleman (b. 957)
Hamid al-Din al-Kirmani, Fatimid scholar and philosopher
Hamza ibn 'Ali ibn-Ahmad, founding leader of the Druze
Liu Mei, Chinese official and general (approximate date)
Mac Cú Ceanain, king of Uí Díarmata (Ireland)
Shams al-Dawla, Buyid emir of Hamadan (Iran)
Trilochanapala, king of the Kabul Shani dynasty

References

[1]
Halm, Heinz (2003). Die Kalifen von Kairo: Die Fāṭimiden in Ägypten, 973–1074 [The Caliphs of Cairo: The Fatimids in Egypt, 973–1074] (in German). Munich: C. H. Beck. pp. 297–302. ISBN 3-406-48654-1.
[2]
Halm, Heinz (2003). Die Kalifen von Kairo: Die Fāṭimiden in Ägypten, 973–1074 [The Caliphs of Cairo: The Fatimids in Egypt, 973–1074] (in German). Munich: C. H. Beck. pp. 307–308. ISBN 3-406-48654-1.
[3]
Bresc, Henri (2003). "La Sicile et l'espace libyen au Moyen Age" (PDF). Parte prima. Il regno normanno e il Mediterraneo. Archived (PDF) from the original on October 9, 2022. Retrieved January 17, 2012.
[4]
Hewsen, Robert H. (2001). Armenia: A Historical Atlas. The University of Chicago Press. p. 126. ISBN 0-226-33228-4.
[5]
Based on dating of a felled tree using dendrochronology based on a timeline using the 993–994 carbon-14 spike. Kuitems, Margot; Wallace, Birgitta L.; Lindsay, Charles; Scifo, Andrea; Doeve, Petra; Jenkins, Kevin; Lindauer, Susanne; Erdil, Pınar; Ledger, Paul M.; Forbes, Véronique; Vermeeren, Caroline (October 20, 2021). "Evidence for European presence in the Americas in ad 1021". Nature. 601 (7893): 388–391. doi:10.1038/s41586-021-03972-8. ISSN 1476-4687. PMC 8770119. PMID 34671168. S2CID 239051036. Our result of AD 1021 for the cutting year constitutes the only secure calendar date for the presence of Europeans across the Atlantic before the voyages of Columbus [in 1492]. Moreover, the fact that our results, on three different trees, converge on the same year is notable and unexpected. This coincidence strongly suggests Norse activity at L'Anse aux Meadows in AD 1021.

[1] [1]
Halm, Heinz (2003). Die Kalifen von Kairo: Die Fāṭimiden in Ägypten, 973–1074 [The Caliphs of Cairo: The Fatimids in Egypt, 973–1074] (in German). Munich: C. H. Beck. pp. 297–302. ISBN 3-406-48654-1.

[2] [2]
Halm, Heinz (2003). Die Kalifen von Kairo: Die Fāṭimiden in Ägypten, 973–1074 [The Caliphs of Cairo: The Fatimids in Egypt, 973–1074] (in German). Munich: C. H. Beck. pp. 307–308. ISBN 3-406-48654-1.

[espace_libyeb-3] [3]
Bresc, Henri (2003). "La Sicile et l'espace libyen au Moyen Age" (PDF). Parte prima. Il regno normanno e il Mediterraneo. Archived (PDF) from the original on October 9, 2022. Retrieved January 17, 2012.

[4] [4]
Hewsen, Robert H. (2001). Armenia: A Historical Atlas. The University of Chicago Press. p. 126. ISBN 0-226-33228-4.

[5] [5]
Based on dating of a felled tree using dendrochronology based on a timeline using the 993–994 carbon-14 spike. Kuitems, Margot; Wallace, Birgitta L.; Lindsay, Charles; Scifo, Andrea; Doeve, Petra; Jenkins, Kevin; Lindauer, Susanne; Erdil, Pınar; Ledger, Paul M.; Forbes, Véronique; Vermeeren, Caroline (October 20, 2021). "Evidence for European presence in the Americas in ad 1021". Nature. 601 (7893): 388–391. doi:10.1038/s41586-021-03972-8. ISSN 1476-4687. PMC 8770119. PMID 34671168. S2CID 239051036. Our result of AD 1021 for the cutting year constitutes the only secure calendar date for the presence of Europeans across the Atlantic before the voyages of Columbus [in 1492]. Moreover, the fact that our results, on three different trees, converge on the same year is notable and unexpected. This coincidence strongly suggests Norse activity at L'Anse aux Meadows in AD 1021.

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[5]