1582 (MDLXXXII in Roman numerals) is a year of the 16th century.
February 24 - Pope Gregory XIII adopts the calendar that bears his name, suppressing 10 days after Thursday 4 October, which, therefore, followed on Friday 15 October. This calendar was adopted from the beginning only in some Catholic states: most of the Italian states (but Tuscany will adopt it only on the Gregorian day Thursday 1 January 1750), the Iberian peninsula and Poland-Lithuania (for the other states see Gregorian calendar ). For the first countries the following picture can be presented which places the start of the year on January 1st (in reality, for many years there have been differences also on this convention).
In this year the French Calvinist theologian and historian Jean de Serres became minister in Nîmes.
A new war breaks out between Poland and Russia. It will end with the transfer to Poland of the territories of Livonia and Estonia.
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