What is 1580?
{{Year nav|1580}} {{Year in various calendars|1580}} '''1580''' ([[Roman numerals|MDLXXX]]) was a [[leap year starting on Friday]] in the [[Julian calendar]] and a [[leap year starting on Tuesday]] in the proleptic [[Gregorian calendar]]. == Events == *[[March 1]] – [[Michel de Montaigne]] signs the preface to his most significant work, [[Essays]]. They are published later the same year. *[[June 11]] – [[Juan de Garay]] founds [[Buenos Aires]]. *[[June 25]] – Publication of the [[Book of Concord]], a collection of [[Lutheran]] confessional documents. *[[July 12]] – Publication of the [[Ostrog Bible]], the first complete printed Bible in a [[Slavic language]]. *[[September 26]] – Sir [[Francis Drake]] circumnavigated the globe *[[Portugal]] loses independence to [[Spain]] following the death without heirs of king [[Henry of Portugal]]. The Habsburg rule would last until [[1640]]. *[[Yermak Timofeyevich|Yermak]] entered [[Siberia]] with a band of 1636 men. Russia begins the [[conquest of Siberia]]. * [[Khorasan Wars (1580)|Khorasan Wars]] were fought between [[Abbas the Great]] and his father king [[Mohammed Khodabandeh]]. [[Category:1580| ]]