820
From Wikipedia, the free encyclopedia
| Years: 816 817 818 819 - 820 - 821 822 823 824 |
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| Decades: 790s 800s 810s - 820s - 830s 840s 850s |
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| Centuries: 8th century - 9th century - 10th century |
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| 820 by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 820 DCCCXX |
| Ab urbe condita | 1573 |
| Armenian calendar | 269 ԹՎ ՄԿԹ |
| Bahá'í calendar | -1024 – -1023 |
| Buddhist calendar | 1364 |
| Chinese calendar | 3456/3516-12-12 (己亥年十二月十二日) — to —
3457/3517-11-23(庚子年十一月廿三日) |
| Ethiopian calendar | 812 – 813 |
| Hebrew calendar | 4580 – 4581 |
| Hindu calendars | |
| - Vikram Samvat | 875 – 876 |
| - Shaka Samvat | 742 – 743 |
| - Kali Yuga | 3921 – 3922 |
| Holocene calendar | 10820 |
| Iranian calendar | 198 – 199 |
| Islamic calendar | 204 – 205 |
| Japanese calendar | |
| - Imperial Year | Kōki 1480 (皇紀1480年) |
| - Jōmon Era | 10820 |
| Julian calendar | 865 |
| Korean calendar | 3153 |
| Thai solar calendar | 1363 |
[edit] 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
[edit] Births
- Rhodri Mawr ('the Great'), ruler of Gwynedd (Wales) (approximate date) (d. 878)
- Photius I, Patriarch of Constantinople (approximate date) (d. 891)
[edit] Deaths
- December 24 - Leo V, Byzantine Emperor (b. 775)(assassinated)
- Tang Xian Zong, emperor of China (end of reign)
