|Eardwulf becomes king of Northumbria again around 808 .|
|808 in other calendars|
|Armenian calendar||256/257 (turn of the year July)|
|Buddhist calendar||1351/52 (southern Buddhism); 1350/51 (alternative calculation according to Buddhas Parinirvana )|
|Chinese calendar||58th (59th) cycle|
|Chula Sakarat (Siam, Myanmar) / Dai calendar (Vietnam)||170/171 (turn of the year April)|
|Iranian calendar||186/187 (around March 21)|
|Islamic calendar||192/193 (October 24/25)|
|Jewish calendar||4568/69 (September 24/25)|
from urbe condita MDLXI (1561)
Diocletian's era : 524/525 (New Year November)
|Seleucid era||Babylon: 1118/19 (turn of the year April)
Syria: 1119/20 (turn of the year October)
|Vikram Sambat (Nepalese Calendar)||864/865 (turn of the year April)|
Politics and world events
Northern and Eastern Europe
- Viking Age : Vikings destroy the Slavic- Danish trading center Reric on the Mecklenburg coast and kidnap the merchants to Haithabu .
Central and Southern Europe
- The Franks under Louis the Pious fail in their attempt to conquer Tortosa for the Kingdom of Aquitaine .
- Fleischwangen is first mentioned in a document.
After the death of his father Cadell ap Brochfael, Cyngen ap Cadell becomes ruler of the Celtic kingdom of Powys in what is now Wales. He faces a permanent threat from the neighboring Anglo-Saxon Kingdom of Mercia .