1500–1799
New horizons. Changing worlds.
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Timekeeping & AstronomyGregorian calendar reform takes effect in October 1582
On 15 October 1582, Rome and several other early adopters began using the Gregorian calendar after skipping ten date numbers. The reform corrected accumulated drift and changed the rules governing leap years.
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Exploration & World ConnectionsVictoria returns to Sanlúcar after the first circumnavigation
Victoria reached Sanlúcar de Barrameda on 6 September 1522 under Juan Sebastián Elcano. The ship's arrival completed the first recorded voyage around the world and joined ocean crossings into one continuous route.
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Animals & Cultural CuriosityA rhinoceros arrives in Lisbon as a royal gift in 1515
On 20 May 1515, a living Indian rhinoceros arrived in Lisbon as a gift for King Manuel I. Its sensational appearance generated reports and images across Europe, including Albrecht Dürer's influential woodcut of an animal he had never seen.
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