| Centuries: | 8th century - 9th century - 10th century |
| Decades: | 790s 800s 810s - 820s - 830s 840s 850s
|
| Years: | 817 818 819 - 820 - 821 822 823 |
| Gregorian calendar | 820 DCCCXX
|
| Ab urbe condita | 1573 |
| Armenian calendar | 269 ԹՎ ՄԿԹ |
| Bahá'í calendar | -1024 – -1023 |
| Buddhist calendar | 1364 |
| Coptic calendar | 536 – 537 |
| 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) |
| Julian calendar | 865 |
| Korean calendar | 3153 |
| Thai solar calendar | 1363 |
Events[]
By Place[]
Asia[]
- Tahir, the son of a slave, is rewarded with the governorship of Khurasan because he have supported the caliphate. He rules independently of Baghdad, not even mentioning the caliph's name in Friday prayers in recognition of caliphal authority.
Byzantine Empire[]
- Michael II succeeds Leo V as Byzantine Emperor.
Europe[]
- The Historia Brittonum is written (approximate date)
- Feidlimid mac Cremthanin assumes the Kingship of Munster
By Topic[]
Science & Technology[]
- Persian mathematician Muḥammad ibn Mūsā al-Ḵwārizmī founded algebra.
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)
| This page uses content from the English language Wikipedia. The original content was at 820. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License. |
People of the year 820 at Familypedia
6 people were born in 820
16 children were born to the 4 women born in 820
0 people died in 820
47 people lived in 820
Events of the year 820 at Familypedia
0 people were married in 820.
There were 0 military battles in 820.