|Ab urbe condita||1675|
|Balinese saka calendar||843–844|
|Chinese calendar||辛巳年 (Metal Snake)|
3618 or 3558
— to —
壬午年 (Water Horse)
3619 or 3559
|- Vikram Samvat||978–979|
|- Shaka Samvat||843–844|
|- Kali Yuga||4022–4023|
|Japanese calendar||Engi 22|
|Minguo calendar||990 before ROC|
|Seleucid era||1233/1234 AG|
|Thai solar calendar||1464–1465|
1048 or 667 or −105
— to —
1049 or 668 or −104
- Summer – Battle of Constantinople: Emperor Romanos I sends Byzantine troops to repel another Bulgarian raid at the outskirts of Constantinople. The Byzantines storm the Bulgarian camp, but are defeated when they are confronted by the main Bulgarian forces. Having won the battle, the Bulgarians lack the maritime power to conduct a successful siege of Constantinople.
- Summer – The West Frankish nobles revolt and depose King Charles III (the Simple) after a 24-year reign. He seeks refuge in Lotharingia and is replaced by Robert I, a brother of the late King Odo, who is crowned king of the West Frankish Kingdom in the cathedral at Rheims.
- Adalbert I, margrave of Ivrea, leads a rebellion with the support of the Italian nobles against King Berengar I. He crosses the Alps into Burgundy and invites Rudolph II of Upper Burgundy to invade Italy. Berengar flees again to Verona and Rudolph is crowned King of Italy at Pavia.
- February 20 – Theodora, Byzantine empress
- March 26 – Mansur al-Hallaj, Persian mystic writer
- May 23 – Li Sizhao, Chinese general and governor
- Æthelweard, son of Alfred the Great (or 920)
- Al-Nayrizi, Persian mathematician and astronomer (b. 865)
- Fortún Garcés (the Monk), king of Pamplona
- Galindo II Aznárez, count of Aragon (Spain)
- Li Cunjin, general of the Tang Dynasty (b. 857)
- Li Cunzhang, general of the Tang Dynasty
- Lucídio Vimaranes, count of Portugal
- Ma Chuo, general and official of Wuyue (or 923)
- Wang Chuzhi, Chinese warlord (b. 862)
- Zhang Chengye, Chinese eunuch official (b. 846)
- Zhang Chujin, Chinese governor (jiedushi)
- "Synopsis of Histories by John Skylitzes" in GIBI, vol. VI, Bulgarian Academy of Sciences, Sofia, p. 252
- Timothy Reuter (1999). The New Cambridge Medieval History: Volume III, p. 379. ISBN 978-0-521-36447-8.
- Timothy Reuter (1999). The New Cambridge Medieval History: Volume III, p. 340. ISBN 978-0-521-36447-8.