902

902 in various calendars
Gregorian calendar	902; CMII
Ab urbe condita	1655
Armenian calendar	351; ԹՎ ՅԾԱ
Assyrian calendar	5652
Balinese saka calendar	823–824
Bengali calendar	309
Berber calendar	1852
Buddhist calendar	1446
Burmese calendar	264
Byzantine calendar	6410–6411
Chinese calendar	辛酉年 (Metal Rooster); 3599 or 3392; — to —; 壬戌年 (Water Dog); 3600 or 3393
Coptic calendar	618–619
Discordian calendar	2068
Ethiopian calendar	894–895
Hebrew calendar	4662–4663
Hindu calendars
- Vikram Samvat	958–959
- Shaka Samvat	823–824
- Kali Yuga	4002–4003
Holocene calendar	10902
Iranian calendar	280–281
Islamic calendar	289–290
Japanese calendar	Engi 2; (延喜２年)
Javanese calendar	800–801
Julian calendar	902; CMII
Korean calendar	3235
Minguo calendar	1010 before ROC; 民前1010年
Nanakshahi calendar	−566
Seleucid era	1213/1214 AG
Thai solar calendar	1444–1445
Tibetan calendar	阴金鸡年; (female Iron-Rooster); 1028 or 647 or −125; — to —; 阳水狗年; (male Water-Dog); 1029 or 648 or −124

Millennium:	1st millennium
Centuries:	9th century; 10th century ; 11th century;
Decades:	880s; 890s; 900s ; 910s; 920s;
Years:	899; 900; 901; 902 ; 903; 904; 905;

Year 902 (CMII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.

Events

Spring – Adalbert II, margrave of Tuscany, revolts against Emperor Louis III ("the Blind"). He helps the deposed King Berengar I to recover the Kingdom of Italy. Louis III is forced to abdicate the Lombard throne and flees to Provence, compelled to promise never to return to Italy.
February – March – Abu Abbas Abdallah, conqueror of Reggio Calabria, returns from Sicily and succeeds his father Ibrahim II as Aghlabid emir of Ifriqiya.
June – Ibrahim II lands with an Aghlabid expeditionary force in Trapani, and proceeds to Palermo. He crushes the reinforced Byzantine army at Giardini.
August 1 – Taormina, the last Byzantine stronghold in Sicily, is captured by the Aghlabid army. After nearly 75 years, all of Sicily is in Aghlabid hands.^[1]
September – Ibrahim II crosses the Strait of Messina into Calabria. He begins his march to conquer the rest of Italy, and lays siege at Cosenza.
October 23 – Ibrahim II dies of dysentery in a chapel near Cosenza. His grandson, Ziyadat Allah, takes over the army, but lifts the siege.
Winter – The Balearic Islands are conquered by the Emirate of Córdoba. The Moors improve agriculture with irrigation on the islands.

December 13 – Battle of the Holme: The Anglo-Saxon army is defeated by the Danish Vikings under Æthelwold (a son of Æthelred I) at Holme. Æthelwold is killed, ending his revolt against King Edward the Elder.
Winter – The Norsemen are expelled from Dublin. After a brief foray into Seisyllwg (Wales), a group, under the Viking lord Ingimundr, settle in the Wirral with the agreement of Lady Æthelflæd of the Mercians.

April 5 – Caliph Al-Mu'tadid dies in Baghdad after a 10-year reign. Possibly poisoned in a palace intrigue, he is succeeded by his eldest son Al-Muktafi as ruler of the Abbasid Caliphate.
The Kutama tribe under Abu Abdallah al-Shi'i revolt against the Aghlabids. He begins a campaign and dispatches an invitation to the Fatimid spiritual leader Ubayd Allah al-Mahdi Billah to support him.
Moorish Andalusian merchants set up a trade settlement (so-called emporium) in Oran (modern Algeria).^[2]

Spring – Emperor Zhao Zong appoints Yang Xingmi as the overall commander of the Eastern circuits in China. He receives the title of Prince Wuzhong of Wu.
The Kingdom of Nanzhao in East Asia is overthrown, followed by three dynasties in quick succession, before the establishment of the Kingdom of Dali in 937.

^ Vasiliev, Alexander A. (1968). Byzance et les Arabes, Tome II: Les relations politiques de Byzance et des Arabes à l'époque de la dynastie macédonienne (les empereurs Basile I, Léon le Sage et Constantin VII Porphyrogénète) 867-959 (253-348). Première partie: Les relations politiques de Byzance et des Arabes à l'époque de la dynastie macédonienne. Première période, de 867 à 959. Corpus Bruxellense Historiae Byzantinae (in French). French ed.: Henri Grégoire, Marius Canard. Brussels: Fondation Byzantine. pp. 145–147. OCLC 1070617015.
^ Gilbert Meynier (2010). L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658-1518). Paris: La Découverte; p. 26.