807

By place

Byzantine Empire

• Emperor Nikephoros I is forced to sue for peace, on condition of paying 50,000 nomismata to Caliph Harun al-Rashid, and agrees to a yearly tribute. Nikephoros promises not to rebuild the dismantled forts. Rashid recalls his forces from various sieges, and evacuates Byzantine territory.
• An Abbasid fleet under Humayd ibn Ma'yuf al-Hajuri raids the Peloponnese, Rhodes and Myra.

  Europe

• Al-Andalus : An uprising occurs in the city of Mérida against the Umayyad Emirate of Córdoba.
• Siege of Patras: This marks the end of independent rule by the South Slavs in the Peloponnese.

  Britain

• The Vikings land on the Cornish coast, and form an alliance with the Cornish to fight against Wessex.
• King Cuthred of Kent dies. His brother, King Coenwulf of Mercia, takes control over Kent himself.

  Asia

• Dappula II becomes king of Sri Lanka, and makes Anuradhapura the capital city.
• Li Jifu is appointed chancellor, during the reign of Emperor Xian Zong in China.

  By topic

Religion

• The Temple of Motoyama-ji in Mitoyo, of the Kōyasan Shingon-shū sect, is constructed by the orders of Emperor Heizei.
• The Jame' Atiq Mosque of Qazvin is constructed in Qazvin, by the orders of Harun al-Rashid.
• The Book of Armagh is written by the Irish illuminator Ferdomnach, a scribe at the School of Armagh.

  Science

• The first record of sun spots appears in Europe.