803

Year 803 (DCCCIII) was a common year starting on Sunday of the Julian calendar.

803 in various calendars

Gregorian calendar	803 DCCCIII
Ab urbe condita	1556
Armenian calendar	252 ԹՎ ՄԾԲ
Assyrian calendar	5553
Balinese saka calendar	724–725
Bengali calendar	209–210
Berber calendar	1753
Buddhist calendar	1347
Burmese calendar	165
Byzantine calendar	6311–6312
Chinese calendar	壬午年 (Water Horse) 3500 or 3293     — to — 癸未年 (Water Goat) 3501 or 3294
Coptic calendar	519–520
Discordian calendar	1969
Ethiopian calendar	795–796
Hebrew calendar	4563–4564
Hindu calendars
- Vikram Samvat	859–860
- Shaka Samvat	724–725
- Kali Yuga	3903–3904
Holocene calendar	10803
Iranian calendar	181–182
Islamic calendar	187–188
Japanese calendar	Enryaku 22 (延暦２２年)
Javanese calendar	698–699
Julian calendar	803 DCCCIII
Korean calendar	3136
Minguo calendar	1109 before ROC 民前1109年
Nanakshahi calendar	−665
Seleucid era	1114/1115 AG
Thai solar calendar	1345–1346
Tibetan calendar	ཆུ་ཕོ་རྟ་ལོ་ (male Water-Horse) 929 or 548 or −224     — to — ཆུ་མོ་ལུག་ལོ་ (female Water-Sheep) 930 or 549 or −223

Territorial expansion of Krum (803–814)

Events

By place

Byzantine Empire

• Emperors Nikephoros I and Charlemagne settle their imperial boundaries in the Adriatic Sea, and sign the Pax Nicephori ("Peace of Nikephoros"). The Byzantines retain control of the coastal cities and islands in Dalmatian Croatia, while Frankish rule is accepted over Istria and the Dalmatian hinterland.^[1] Venice is recognized as independent by the Byzantine Empire.
• Summer – Bardanes Tourkos, Byzantine general (strategos), is proclaimed emperor by the troops of the Anatolic, Opsikion, Thracian and Bucellarian themes. The 'rebel' army marches to Chrysopolis, a suburb of Constantinople. After the defection of two of his trusted aides, future emperors Leo the Armenian and Michael the Amorian, Bardanes negotiates peace.

Europe

• May – Krum, ruler (khan) of the Bulgarian Empire, begins his territorial expansion and raids the Byzantine northern frontier. He leads his warriors — mostly Bulgars, Slavs, Thracians and Macedonians — across the Carpathian Mountains, over the Danube River, and throughout Transylvania, Thrace, and Macedonia.
• St. Peter Stiftskulinarium, possibly Central Europe's oldest restaurant, is founded in Salzburg, Austria.^[2]

Abbasid Caliphate

• Caliph Harun al-Rashid has his friend and vizier (secretary) Ja'far ibn Yahya beheaded, The surviving members of the influential Barmakid family (Jafar's family) are imprisoned on the orders of Harun, and their property is confiscated.
• Marriage of caliph Harun al-Rashid and Umm Muhammad; She was the daughter of Abbasid prince Salih al-Miskin and Umm Abdullah, the daughter of Isa ibn Ali. They married in November–December 803 in Al-Raqqah. She had formerly been married to Ibrahim ibn al-Mahdi, who had repudiated her.^[3]
• The 803 Mopsuestia earthquake takes place in the vicinity of Mopsuestia, and the Gulf of Alexandretta (İskenderun) ^[4]

By topic

Religion

• October 12 – The Synod of Clofesho (possibly Brixworth) is held, at which the Archbishopric of Lichfield is demoted to an ordinary bishopric, with papal permission obtained by King Coenwulf of Mercia.

Births

• Du Mu, Chinese poet and official (d. 852)
• Emma of Altdorf, Frankish queen and wife of King Louis the German of East Francia (died 876)
• Ibn 'Abd al-Hakam, Muslim historian (d. 871)
• Liu Congjian, Chinese governor (d. 843)

Deaths

• May 25 – Higbald, bishop of Lindisfarne
• August 9 – Irene of Athens, Byzantine empress
• Ja'far ibn Yahya, Persian vizier (b. 767)
• Kardam, ruler (khan) of Bulgaria (or 802)