805

Year 805 was a common year starting on Wednesday of the Julian calendar, the 805th year of the Common Era and Anno Domini designations, the 805th year of the 1st millennium, the 5th year of the 9th century, and the 6th year of the 800s decade.

Events

Siege of Patras: Local Slavic tribes of the Peloponnese lay siege to the city of Patras, with aid from an Arab fleet. A Byzantine relief army under Skleros, military governor from Corinth, is sent and retakes the city. The captured Slavs in Patras are made slaves, and a church is dedicated to St. Andrew.
Europe
Siege of Canburg: The Franks under Charles the Younger, son of emperor Charlemagne, unsuccessfully besiege Bohemians near the modern-day town of Kadaň.
Krum, ruler of the Bulgarian Empire, conquers and destroys the Eastern part of the Avar Khaganate.
The first known mention of Magdeburg, founded by Charlemagne, is made.
Asia
February 25 - Emperor Dezong of Tang dies after a 25-year reign, in which the fanzhen is controlled by military governors or jiedushi, who often ignore imperial decrees. He is succeeded by his son Shunzong, who becomes ruler of the Tang Dynasty.
August 31 - Shunzong issues an edict to yield the throne to his son Xianzong, because of an illness, taking for himself the title of "Retired Emperor". Xian is confronted with political disputes in Zi Prefecture.
Priest Saichō, patriarch of Tendai Buddhism, visits China and introduces tea to Japan on his return.
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