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820
From Encyclopedia Jr, free information reference for Kids
| 820 by topic |
| Politics |
| State leaders - Sovereign states |
| Birth and death categories |
| Births - Deaths |
| Establishments and disestablishments categories |
| Establishments - Disestablishments |
820 in other calendars
| Gregorian calendar |
820
DCCCXX |
| Ab urbe condita |
1573 |
| Armenian calendar |
269
ԹՎ ՄԿԹ |
| Chinese calendar |
3516 – 3517
己亥 – 庚子 |
| Ethiopian calendar |
812 – 813 |
| Hebrew calendar |
4580 – 4581 |
| Hindu calendars |
|
| - Vikram Samvat |
875 – 876 |
| - Shaka Samvat |
742 – 743 |
| - Kali Yuga |
3921 – 3922 |
| Iranian calendar |
198 – 199 |
| Islamic calendar |
204 – 205 |
Events
- Persian mathematician Muḥammad ibn Mūsā al-Ḵwārizmī founded algebra.
- Michael II succeeds Leo V as Byzantine Emperor
- The Historia Brittonum is written (approximate date)
- Feidlimid mac Cremthanin assumes the Kingship of Munster
Births
- Rhodri Mawr ('the Great'), ruler of Gwynedd (Wales) (approximate date) (d. 878)
- Photius I, Patriarch of Constantinople (approximate date) (d. 891)
Deaths
- December 24 - Leo V, Byzantine Emperor (b. 775)(assassinated)
- Tang Xian Zong, emperor of China (end of reign)
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