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I don't have specific context provided about "1663" beyond it being a year. Without additional information about what "1663" refers to (a historical event, publication, discovery, or other significant occurrence), I cannot write an accurate overview. Could you provide more context about what aspect of 1663 you'd like me to explain?
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June 8: The Battle of Ameixial takes place between Portugal and Spain
1663 (MDCLXIII) was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1663rd year of the Common Era (CE) and Anno Domini (AD) designations, the 663rd year of the 2nd millennium, the 63rd year of the 17th century, and the 4th year of the 1660s decade. As of the start of 1663, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.