904
| Millennium: | 1st millennium |
|---|---|
| Centuries: | 9th century – 10th century – 11th century |
| Decades: | 870s 880s 890s – 900s – 910s 920s 930s |
| Years: | 901 902 903 – 904 – 905 906 907 |
| 904 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 904 CMIV |
| Ab urbe condita | 1657 |
| Armenian calendar | 353 ԹՎ ՅԾԳ |
| Assyrian calendar | 5654 |
| Bengali calendar | 311 |
| Berber calendar | 1854 |
| Buddhist calendar | 1448 |
| Burmese calendar | 266 |
| Byzantine calendar | 6412–6413 |
| Chinese calendar | 癸亥年 (Water Pig) 3600 or 3540 — to — 甲子年 (Wood Rat) 3601 or 3541 |
| Coptic calendar | 620–621 |
| Discordian calendar | 2070 |
| Ethiopian calendar | 896–897 |
| Hebrew calendar | 4664–4665 |
| Hindu calendars | |
| - Vikram Samvat | 960–961 |
| - Shaka Samvat | 826–827 |
| - Kali Yuga | 4005–4006 |
| Holocene calendar | 10904 |
| Iranian calendar | 282–283 |
| Islamic calendar | 291–292 |
| Japanese calendar | Engi 4 (延喜４年) |
| Julian calendar | 904 CMIV |
| Korean calendar | 3237 |
| Minguo calendar | 1008 before ROC 民前1008年 |
| Seleucid era | 1215/1216 AG |
| Thai solar calendar | 1446–1447 |
 |
Wikimedia Commons has media related to 904. |
Year 904 (CMIV) was a leap year starting on Sunday (link will display the full calendar) of the Julian calendar.
Events
By place
Asia
- The Byzantines under Andronikos Doukas defeat the Arab garrisons of Mopsuestia and Tarsos near Marash.
- Chang'an, the capital of Tang dynasty China and the largest city in the ancient world, is destroyed.
- September 22 – The warlord Zhu Quanzhong kills Emperor Zhaozong, the penultimate emperor of Tang dynasty China, after seizing control of the imperial government.
- The Abbasids invade the Tulunid emirate of Egypt.
Europe
- July 29 – Sack of Thessalonica: Saracen raiders under Leo of Tripoli sack Thessalonica, the Byzantine Empire's second-largest city, after a short siege, and plunder it for a week.
- In Portugal, for the third time in less than 30 years, the Christians take control of Coimbra, this time for almost a century.[1]
- July 29 – The Bavarians kill an important leader (gyula or horka) of the Hungarian tribal confederation, Kurszán in an ambush.
By topic
Religion
- January 29 – Pope Sergius III succeeds Pope Leo V and the deposed Antipope Christopher (both of whom are murdered or exiled) as the 119th pope; he begins the era of the Pornocracy.
Births
- June 30 – Guo Wei, posthumously known as Emperor Taizu of Later Zhou
Deaths
- January – Antipope Christopher the antipope
- October – Al-Qasim ibn Ubayd Allah, Abbasid vizier
- Zhaozong, 19th emperor of the Tang dynasty
- Erenfried I of Maasgau, Count of Bliesgau, Keldachgau and Bonngau and Count of Charmois
- Du Xunhe, Chinese poet
- Llywarch ap Hyfaidd. King of Dyfed, Wales
- Ki no Tomonori, early Heian waka poet
- Kurszán, partner ruler of the Magyars beside Árpád
- Harun ibn Khumarawayh, fourth Emir of the Tulunids
- Yahya ibn Al-Qassim, eighth Idrisid ruler and sultan of Morocco
- Zhang Jun, Tang dynasty chancellor
- Lady Zhang, wife of Zhu Quanzhong