1583 followed by 1584
1583 (MDLXXXIII) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1583rd year of the Common Era (CE) and Anno Domini (AD) designations, the 583rd  year of the 2nd millennium, the 83rd  year of the 16th century, and the  4th   year of the 1580s decade. As of the start of 1583, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.