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1584 is in the 16th century.
16th century October.
That is the last year of the 16th century
1509 would be in the 16th century.
The 16th. century spans the years 1501-1600.The 16th. century spans the years 1501-1600.The 16th. century spans the years 1501-1600.The 16th. century spans the years 1501-1600.