891

Calendar overview 891

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891
Photios I , former Patriarch of Constantinople, dies.
891 in other calendars
Armenian calendar	339/340 (turn of the year July)
Ethiopian calendar	883/884
Buddhist calendar	1434/35 (southern Buddhism); 1433/34 (alternative calculation according to Buddha's Parinirvana )
Chinese calendar	59th (60th) cycle Year of the metal pig辛亥 ( at the beginning of the year metal dog 庚戌)
Chula Sakarat (Siam, Myanmar) / Dai calendar (Vietnam)	253/254 (turn of the year April)
Iranian calendar	269/270
Islamic calendar	277/278 (April 13-14)
Jewish calendar	4651/52 (September 8/9)
Coptic calendar	607/608
Malayalam calendar	66/67
Roman calendar	from urbe condita MDCXLIV (1644) Diocletian's era : 607/608 (New Year November)
Seleucid era	Babylon: 1201/02 (turn of the year April) Syria: 1202/03 (New Year October)
Spanish era	929
Vikram Sambat (Nepalese Calendar)	947/948 (turn of the year April)

Events

June 2 : After the death of the regent al-Muwaffaq , his son al-Mu'tadid bi-'llah takes over his official duties and forces his uncle al-Muʿtamid , the Abbasid caliph , to appoint him heir to the throne.

September: Imperial troops under the leadership of the East Franconian King Arnulf of Carinthia defeat the Viking "Great Army" in Flanders on the Dijle near Löwen .

Bingen am Rhein is invaded by the Vikings . The Drusus Bridge over the Nahe , built by the Romans in the 1st century AD, is destroyed.

After Sunderold's death on June 26th, Hatto I becomes Archbishop of Mainz .

Formosus , Bishop of Porto-Santa Rufina, succeeds Stephen V , who died on September 14th, as Pope . He probably reluctantly repeats the coronation of Guido von Spoleto and crowns his son Lambert von Spoleto as co-emperor .

around 10. bis 12. May : The Great Comet / 891 J1 X appears and is observed in China, the Middle East and Europe for about two months.