1599

1599 (MDXCIX) was a common year starting on Friday of the Gregorian calendar and a common year starting on Monday of the Julian calendar, the 1599th year of the Common Era (CE) and Anno Domini (AD) designations, the 599th year of the 2nd millennium, the 99th year of the 16th century, and the 10th and last year of the 1590s decade. As of the start of 1599, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.