What Happened in 820 AD
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- S 2
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- T 6
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- S 9
- M 10
- T 11
- W 12
- T 13
- F 14
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- M 17
- T 18
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- M 24
- T 25
- W 26
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- F 28
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- M 31
- Jan 20 Muslim jurist Abu Abdallah M ibn Idris al-Sjafi'i, dies
- Sep 14 Li Jong, Chinese official and governor of the Tang Dynasty dies
- Dec 25 Leo V, the Armenian, Byzantine general and Emperor (813-20), murdered in the Hagia Sophia at about 65
- S 1
- S 2
- M 3
- T 4
- W 5
- T 6
- F 7
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- S 9
- M 10
- T 11
- W 12
- T 13
- F 14
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- M 17
- T 18
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- F 21
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- M 24
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- F 28
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- M 31
List of Years
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V