827

Europe

 * Arabs invade.

Americas

 * The royal ceremonial centre at is abandoned.

Religion

 * — succeeds  as the 100th.
 * succeeds as the 101st .  (date unclear)

Science

 * and measure the size of the.

Births

 * , scholar, theologian, and linguist (d. )
 * , (d. )

Deaths

 * September —
 * September —