990

Millennium:	1st millennium
Centuries:	9th century – 10th century – 11th century
Decades:	960s  970s  980s  – 990s –  1000s  1010s  1020s
Years:	987 988 989 – 990 – 991 992 993

990 was a common year.

Events

• January 1 – Kievan Rus' adopts the Julian calendar.
• Construction of the Al-Hakim Mosque begins in Cairo.
• The Pax Ecclesiae, an edict by the church in southern France attempting to outlaw acts of war against non-combatants and the clergy, is promulgated.

Births

• Conrad II, Holy Roman Emperor (approximate)
• Edmund II of England, (approximate)
• Mieszko II of Poland, king of Poland from 1025 to 1031, duke from 1032 to 1034.
• Yorimichi, regent to the Japanese emperor from 1017 to 1020 and from 1020 to 1068.
• Johannes Skotus, Bishop of Mecklenburg (approximate)

Deaths

• Kaneie, regent to the Japanese emperor from 986 to 990.
• Al-Uqlidisi, Middle-East mathematician.
• Dunash ben Labrat