837

Year 837 (DCCCXXXVII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar.

Millennium:	1st millennium
Centuries:	8th century 9th century 10th century
Decades:	810s 820s 830s 840s 850s
Years:	834 835 836 837 838 839 840

837 in various calendars

Gregorian calendar	837 DCCCXXXVII
Ab urbe condita	1590
Armenian calendar	286 ԹՎ ՄՁԶ
Assyrian calendar	5587
Balinese saka calendar	758–759
Bengali calendar	244
Berber calendar	1787
Buddhist calendar	1381
Burmese calendar	199
Byzantine calendar	6345–6346
Chinese calendar	丙辰年 (Fire Dragon) 3534 or 3327     — to — 丁巳年 (Fire Snake) 3535 or 3328
Coptic calendar	553–554
Discordian calendar	2003
Ethiopian calendar	829–830
Hebrew calendar	4597–4598
Hindu calendars
- Vikram Samvat	893–894
- Shaka Samvat	758–759
- Kali Yuga	3937–3938
Holocene calendar	10837
Iranian calendar	215–216
Islamic calendar	222–223
Japanese calendar	Jōwa 4 (承和４年)
Javanese calendar	733–734
Julian calendar	837 DCCCXXXVII
Korean calendar	3170
Minguo calendar	1075 before ROC 民前1075年
Nanakshahi calendar	−631
Seleucid era	1148/1149 AG
Thai solar calendar	1379–1380
Tibetan calendar	阳火龙年 (male Fire-Dragon) 963 or 582 or −190     — to — 阴火蛇年 (female Fire-Snake) 964 or 583 or −189

The Presian Inscription (Philippi, Greece)

Events

By place

Byzantine Empire

• Byzantine–Arab War: Emperor Theophilos leads a massive Byzantine expeditionary force into Mesopotamia. He sacks the cities Arsamosata and Sozopetra—which some sources claim as the birthplace of Abbasid caliph Al-Mu'tasim—and forces Melitene to pay tribute.^[1]
• The Slavs in the vicinity of Thessaloniki revolt against the Byzantine Empire. Theophilos undertakes an evacuation of some Byzantine captives, who are settled in trans-Danubian Bulgaria.

Europe

• Presian I, ruler (khan) of the Bulgarian Empire, sends his prime-minister Isbul against the Smolyani (a Slavic tribe in Byzantine territory near the Struma River). The Bulgarian army campaigns along the Aegean coasts, and conquers most of Thrace and Macedonia, including the fortress city of Philippi (see Presian Inscription).^[2]
• The city of Naples (modern Italy) is attacked by Saracens from Egypt demanding an annual payment (approximate date).

Britain

• King Drest IX dies after a 3-year reign. He is succeeded by his cousin Eóganan, as ruler of the Picts.

By topic

Astronomy

• April 10 – Comet Halley passes approximately 5 million km from Earth, its closest ever approach.

Births

• Al-Muntasir, Muslim caliph (d. 862)
• Baldwin I, margrave of Flanders (approximate date)
• Ibn Duraid, Muslim poet and philologist (d. 933)
• Ibn Khuzaymah, Muslim hadith and scholar (d. 923)

Deaths

• Antony I, patriarch of Constantinople
• Drest IX, king of the Picts
• Eadwulf, bishop of Lindsey
• Giovanni I, doge of Venice
• Hugh of Tours, Frankish nobleman
• Li Zaiyi, general of the Tang Dynasty (b. 788)
• Maxentius, patriarch of Aquileia
• Oliba I, Frankish nobleman
• Peter of Atroa, Byzantine abbot (b. 773)

References

1. Treadgold, Warren (1997). A History of the Byzantine State and Society. Stanford, California: Stanford University Press. p. 440. ISBN 0-8047-2630-2.
2. Fine, John V. A. Jr. (1991) [1983]. The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century. Ann Arbor: University of Michigan Press. p. 109. ISBN 0-472-08149-7.