The1580s BC was a decade lasting from January 1, 1589 BC to December 31, 1580 BC.

• TheEgyptians invented a new and better calendar. It is based on both the moon and a star. They observed the annual appearance of the brightest star in the sky,Sirius. This calendar was more advanced than theBabylonian calendar.

• Erishum III,King of Assyria,1598–1586 BC (traditional date), or ca. 1580–1567 BC (newer dating)^[1]
• Actaeus,King of Athens, first King of Athens according to theParian Chronicle succeeded in the throne byCecrops I

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