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848 in various calendars
Gregorian calendar	848; DCCCXLVIII
Ab urbe condita	1601
Armenian calendar	297; ԹՎ ՄՂԷ
Assyrian calendar	5598
Balinese saka calendar	769–770
Bengali calendar	255
Berber calendar	1798
Buddhist calendar	1392
Burmese calendar	210
Byzantine calendar	6356–6357
Chinese calendar	丁卯年 (Fire Rabbit); 3545 or 3338; — to —; 戊辰年 (Earth Dragon); 3546 or 3339
Coptic calendar	564–565
Discordian calendar	2014
Ethiopian calendar	840–841
Hebrew calendar	4608–4609
Hindu calendars
- Vikram Samvat	904–905
- Shaka Samvat	769–770
- Kali Yuga	3948–3949
Holocene calendar	10848
Iranian calendar	226–227
Islamic calendar	233–234
Japanese calendar	Jōwa 15 / Kashō 1; (嘉祥元年)
Javanese calendar	745–746
Julian calendar	848; DCCCXLVIII
Korean calendar	3181
Minguo calendar	1064 before ROC; 民前1064年
Nanakshahi calendar	−620
Seleucid era	1159/1160 AG
Thai solar calendar	1390–1391
Tibetan calendar	阴火兔年; (female Fire-Rabbit); 974 or 593 or −179; — to —; 阳土龙年; (male Earth-Dragon); 975 or 594 or −178

Millennium:	1st millennium
Centuries:	8th century; 9th century ; 10th century;
Decades:	820s; 830s; 840s ; 850s; 860s;
Years:	845; 846; 847; 848 ; 849; 850; 851;

Year 848 (DCCCXLVIII) was a leap year starting on Sunday (link will display the full calendar) of the Julian calendar.

Events

Summer – Bordeaux, capital of Aquitaine, falls into the hands of Viking raiders. King Charles the Bald sends a Frankish fleet to lift the siege. Despite destroying some Viking longships on the Dordogne River, they fail to save the city. The Abbey of Saint-Pierre in Brantôme is sacked.
Emperor Lothair I, and his (half) brothers Louis the German and Charles the Bald, meet in Koblenz to continue the system of "con-fraternal government".
Frankish forces under Count (comté) William of Septimania assume authority over the counties of Barcelona and Empúries (modern Spain).
The Saracens conquer Ragusa (Sicily), after its Byzantine garrison is forced by severe famine to surrender. The city and its castle are razed to the ground.^[1]

The armies of Brycheiniog and Gwent clash in the battle of Ffinnant (Wales). King Ithel of Gwent is killed in the fighting (approximate date).
Máel Sechnaill mac Maíl Ruanaid, High King of Mide, defeats a Norse Viking army at Sciath Nechtain in Ireland (approximate date).

Pope Leo IV builds (on the opposite of the Tiber River) the Leonine City, a fortified three-kilometre wall that encircles the Vatican Hill and Borgo, to defend Rome.^[2]
The Roman Catholic church of Santa María del Naranco, on the slope of Monte Naranco (Northern Spain), is completed.

^ Vasiliev (1935), p. 208.
^ Wards-Perkins, Bryan. From Classical Antiquity to the Middle Ages, p. 195. Oxford University Press, 1984. ISBN 0-19-821898-2.