820

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◄ | 8th century | 9th Century | 10th Century | ► ◄ | 790er | 800 | 810er | 820 | 830 | 840 | 850 | ► ◄ ◄ | ◄ | 816 | 817 | 818 | 819 | 820 | 821 | 822 | 823 | 824 | ► | ► ►

Heads of State

Year of the Metal Rat庚子(at the beginning of Earth Pig己亥)

Era of Diocletian: 536/537 ( year November )

Syria: 1131/32 ( the year in October )

Events

Politics and World Affairs

Science, Religion and Culture

  • Earliest known mention of the Abbey Library of St. Gallen

Born

  • Nicholas I, Pope († 867 )
  • To 820: Photios I, Patriarch of Constantinople Opel († 891 )

Died

  • December 25: Leo V, Byzantine Emperor and general (* 775)
  • Remedius, Bishop of Chur
  • Ash- Shafi ʿ ī, Islamic scholar (* 767 )
  • Tang Xianzong, Chinese Emperor
April 2014 List of centuries 7th century 11th century 780s 790s 800s (decade) 810s 820s 830s 840s 850s 860s 815 825 Armenian calendar Vikram Samvat Buddhist calendar Sexagenary cycle Dai people Iranian calendars Coptic calendar Viking Age Hasel Flag of Wales History of Wales Pope Nicholas I Emperor Xianzong of Tang
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