847

847 in various calendars
Gregorian calendar	847; DCCCXLVII
Ab urbe condita	1600
Armenian calendar	296; ԹՎ ՄՂԶ
Assyrian calendar	5597
Balinese saka calendar	768–769
Bengali calendar	254
Berber calendar	1797
Buddhist calendar	1391
Burmese calendar	209
Byzantine calendar	6355–6356
Chinese calendar	丙寅年 (Fire Tiger); 3544 or 3337; — to —; 丁卯年 (Fire Rabbit); 3545 or 3338
Coptic calendar	563–564
Discordian calendar	2013
Ethiopian calendar	839–840
Hebrew calendar	4607–4608
Hindu calendars
- Vikram Samvat	903–904
- Shaka Samvat	768–769
- Kali Yuga	3947–3948
Holocene calendar	10847
Iranian calendar	225–226
Islamic calendar	232–233
Japanese calendar	Jōwa 14; (承和１４年)
Javanese calendar	744–745
Julian calendar	847; DCCCXLVII
Korean calendar	3180
Minguo calendar	1065 before ROC; 民前1065年
Nanakshahi calendar	−621
Seleucid era	1158/1159 AG
Thai solar calendar	1389–1390
Tibetan calendar	阳火虎年; (male Fire-Tiger); 973 or 592 or −180; — to —; 阴火兔年; (female Fire-Rabbit); 974 or 593 or −179

Millennium:	1st millennium
Centuries:	8th century; 9th century ; 10th century;
Decades:	820s; 830s; 840s ; 850s; 860s;
Years:	844; 845; 846; 847 ; 848; 849; 850;

Year 847 (DCCCXLVII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.

Events

Danish Vikings land in the Breton March (western part of Gaul). Duke Nominoe of Brittany fails to withstand them in battle, but succeeds in buying them off with gifts and persuading them to leave (approximate date).
Viking period: The Vikings plunder the Lower Rhine as part of their attacks on the Empire of Francia
The Saracens, under the Berber leader Kalfun, capture the Byzantine city of Bari (Southern Italy). He becomes the first ruler of the Emirate of Bari, and expands his influence on the Italian mainland with raids.^[1]

August 10 – Caliph Al-Wathiq dies of dropsy after a five-year reign. He is succeeded by his brother al-Mutawakkil.

January 24 – Pope Sergius II dies of gout after a 3-year reign. He is succeeded by Leo IV, as the 103rd pope of Rome.
April 21– Rabanus Maurus, a Frankish Benedictine monk, becomes archbishop of Mainz after the death of Odgar.