864
| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 830s 840s 850s – 860s – 870s 880s 890s |
| Years: | 861 862 863 – 864 – 865 866 867 |
| 864 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 864 DCCCLXIV |
| Ab urbe condita | 1617 |
| Armenian calendar | 313 ԹՎ ՅԺԳ |
| Assyrian calendar | 5614 |
| Bengali calendar | 271 |
| Berber calendar | 1814 |
| Buddhist calendar | 1408 |
| Burmese calendar | 226 |
| Byzantine calendar | 6372–6373 |
| Chinese calendar | 癸未年 (Water Goat) 3560 or 3500 — to — 甲申年 (Wood Monkey) 3561 or 3501 |
| Coptic calendar | 580–581 |
| Discordian calendar | 2030 |
| Ethiopian calendar | 856–857 |
| Hebrew calendar | 4624–4625 |
| Hindu calendars | |
| - Vikram Samvat | 920–921 |
| - Shaka Samvat | 786–787 |
| - Kali Yuga | 3965–3966 |
| Holocene calendar | 10864 |
| Iranian calendar | 242–243 |
| Islamic calendar | 249–250 |
| Japanese calendar | Jōgan 6 (貞観６年) |
| Julian calendar | 864 DCCCLXIV |
| Korean calendar | 3197 |
| Minguo calendar | 1048 before ROC 民前1048年 |
| Seleucid era | 1175/1176 AG |
| Thai solar calendar | 1406–1407 |
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Year 864 (DCCCLXIV) was a leap year starting on Saturday (link will display the full calendar) of the Julian calendar.
Events
By place
Asia
- Hasan ibn Zayd establishes the Zaydid emirate of Tabaristan.
Europe
- July 25 – Edict of Pistres: Charles the Bald orders defensive measures against the Vikings.
- Louis II marches against Rome but, getting ill, decides to make peace with the Pope.
- Orso I Participazio becomes Doge of Venice.
- Alfonso III of León conquers Porto from the diminished Umayyads. This is the final act of the direct Muslim domination of the Douro region.[1]
- First written reference to Devín Castle, when Louis the German besieges Great Moravian prince Rastislav there.
By topic
Religion
- The Christianization of Bulgaria begins: Khan Boris I of Bulgaria is baptized an Orthodox Christian.
Births
Deaths
- September 13 – Pietro Tradonico, Doge of Venice
- Al-Fadl ibn Marwan, Christian vizier of the Abbasid Caliphate (b. ca. 774)
- Trpimir I of Croatia
- Arnold of Gascony, Count of Fézensac and Duke of Gascony
- Bi Xian, Tang dynasty chancellor
- Saint Laura, martyred Spanish abbess
- Conrad I, Count of Auxerre
- Ennin, priest of the Tendai school
- Hucbert, son of Boso the Elder
- Lorcán mac Cathail, King of Uisnech and Mide
- Pei Xiu, Tang dynasty chancellor
- Sancho II, Count of Gascony
- Sergius I, Duke of Naples
- Yahya ibn Muhammad, Sultan of Idrisid dynasty
- Yahya ibn Umar, Alid Imam