827

827 in variouscalendars
Gregorian calendar	827; DCCCXXVII
Ab urbe condita	1580
Armenian calendar	276; ԹՎ ՄՀԶ
Assyrian calendar	5577
Balinese saka calendar	748–749
Bengali calendar	234
Berber calendar	1777
Buddhist calendar	1371
Burmese calendar	189
Byzantine calendar	6335–6336
Chinese calendar	Bính ngọNăm (FireHorse); 3524 or 3317; — to —; Đinh Mùi năm (FireGoat); 3525 or 3318
Coptic calendar	543–544
Discordian calendar	1993
Ethiopian calendar	819–820
Hebrew calendar	4587–4588
Hindu calendars
-Vikram Samvat	883–884
-Shaka Samvat	748–749
-Kali Yuga	3927–3928
Holocene calendar	10827
Iranian calendar	205–206
Islamic calendar	211–212
Japanese calendar	Tenchō4; ( thiên trường ４ năm )
Javanese calendar	723–724
Julian calendar	827; DCCCXXVII
Korean calendar	3160
Minguo calendar	1085 beforeROC; Dân trước 1085 năm
Nanakshahi calendar	−641
Seleucid era	1138/1139AG
Thai solar calendar	1369–1370
Tibetan calendar	Dương hỏa mã năm; (male Fire-Horse); 953 or 572 or −200; — to —; Âm hỏa dương năm; (female Fire-Goat); 954 or 573 or −199

Millennium:	1st millennium
Centuries:	8th century; 9th century; 10th century;
Decades:	800s; 810s; 820s; 830s; 840s;
Years:	824; 825; 826; 827; 828; 829; 830;

Year827(DCCCXXVII) was acommon year starting on Tuesday(link will display the full calendar) of theJulian calendar.

Events

June 14–Euphemius,exiled Byzantine admiral, asks for the help of North AfricanArabs,to retakeSicilyandMaltafrom the Byzantines.^[1]EmirZiyadat Allah I of Ifriqiyapromises to return the islands to Euphemius, in exchange for a yearlytribute,and sends anArab Muslimexpeditionary force of 10,000 men under the 70-year-oldAsad ibn al-Furat,which lands atMazara del Valloin Sicily.
Fall –Siege of Syracuse:Muslim forces under Asad ibn al-Furat, in support of the rebel Byzantine army, besiegeSyracuse, Sicily.^[2]

Summer –Omurtag,ruler (khan) of theBulgarian Empire,launches an attack to theWest,and penetrates intoPannonia.He expels the local chiefs, and installsBulgargovernors over theSlavictribes to control them. Omurtag conquers the cities ofBeograd,Braničevo,Sirmium,and most of easternSlavonia.^[3]
Giustiniano Participaziodeposes his younger brotherGiovanni I,and is appointeddogeofVenice.Giovanni, who is part of a pro-Frankishfaction, is exiled toZara(modernCroatia).

Æthelstanestablishes himself as king ofEast Anglia,after killing KingLudeca of Merciain battle. Ludeca is succeeded byWiglaf,father-in-law (and probably distant cousin) of the late kingCeolwulf I's daughter.

EmperorJing Zongis assassinated by a group of conspirators. He is succeeded by his brotherWen Zong,as ruler of theTang Dynasty.

August 27–Pope Eugene IIdies after a 3-year reign, and is succeeded byValentineas the 100thpopeof theCatholic Church.
October 10– Pope Valentine dies just after a two-month reign, and is succeeded byGregory IVas the 101st pope ofRome.

Chalid Ben AbdulmelikandAli Ben Isatravel to the Plain ofSinjar(modernIraq), under orders of CaliphAl-Ma'mun,to measure the size of theEarth.

TheSaracens,who foundspinachoriginally inPersia(modernIran), introduce theplantto Sicily.^[4]

^Peter Sammartino and William Roberts,Sicily: An Informal History,p. 43.
^Gilbert Meynier (2010)L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658-1518).Paris: La Découverte; p. 23.
^John V.A. Fine, Jr. (1991).The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century,p. 107.ISBN 978-0-472-08149-3.
^Rolland, Jacques L.; Sherman, Carol (2006).The Food Encyclopedia.Toronto: Robert Rose. pp. 335–338.ISBN 978-0-778-80150-4.