805

805 in various calendars
Gregorian calendar	805; DCCCV
Ab urbe condita	1558
Armenian calendar	254; ԹՎ ՄԾԴ
Assyrian calendar	5555
Balinese saka calendar	726–727
Bengali calendar	212
Berber calendar	1755
Buddhist calendar	1349
Burmese calendar	167
Byzantine calendar	6313–6314
Chinese calendar	甲申年 (Wood Monkey); 3502 or 3295; — to —; 乙酉年 (Wood Rooster); 3503 or 3296
Coptic calendar	521–522
Discordian calendar	1971
Ethiopian calendar	797–798
Hebrew calendar	4565–4566
Hindu calendars
- Vikram Samvat	861–862
- Shaka Samvat	726–727
- Kali Yuga	3905–3906
Holocene calendar	10805
Iranian calendar	183–184
Islamic calendar	189–190
Japanese calendar	Enryaku 24; (延暦２４年)
Javanese calendar	700–701
Julian calendar	805; DCCCV
Korean calendar	3138
Minguo calendar	1107 before ROC; 民前1107年
Nanakshahi calendar	−663
Seleucid era	1116/1117 AG
Thai solar calendar	1347–1348
Tibetan calendar	阳木猴年; (male Wood-Monkey); 931 or 550 or −222; — to —; 阴木鸡年; (female Wood-Rooster); 932 or 551 or −221

Millennium:	1st millennium
Centuries:	8th century; 9th century ; 10th century;
Decades:	780s; 790s; 800s ; 810s; 820s;
Years:	802; 803; 804; 805 ; 806; 807; 808;

Year 805 (DCCCV) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar, the 805th year of the Common Era (CE) and Anno Domini (AD) 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 (modern Greece), with aid from an Arab fleet. A Byzantine relief army under Skleros, military governor (strategos) from Corinth, is sent and retakes the city. The captured Slavs in Patras are made slaves, and a church is dedicated to St. Andrew.^[1]

Battle of Canburg: The Franks under Charles the Younger, son of emperor Charlemagne, defeat the Slavs near the modern-day town of Kadaň, and conquer Bohemia (modern Czech Republic).
Krum, ruler (khan) of the Bulgarian Empire, conquers and destroys the Eastern part of the Avar Khaganate (approximate date).
The first known mention of Magdeburg (Saxony-Anhalt), founded by Charlemagne, is made.

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 (Li Chun), because of an illness, taking for himself the title of "Retired Emperor" (Taishang Huang). Xian is confronted with political disputes in Zi Prefecture (Shaanxi).
Priest Saichō, patriarch of Tendai Buddhism, visits China and introduces tea to Japan on his return (or 804).

García Íñiguez I, king of Pamplona (approximate date)
Louis the German, grandson of Charlemagne and first East frankish king. (Approximate date) (d. 876)
Liudolf, duke of Saxony (approximate date)
Lupus Servatus, Frankish abbot (approximate date)