Year 1564 (MDLXIV) was a leap year starting on Saturday of the Julian calendar.
Year 1542 (MDXLII) was a common year starting on Sunday of the Julian calendar.
1582 (MDLXXXII) was a common year starting on Monday of the Julian calendar, and a common year starting on Friday of the Proleptic Gregorian calendar, the 1582nd year of the Common Era (CE) and Anno Domini (AD) designations, the 582nd year of the 2nd millennium, the 82nd year of the 16th century, and the 3rd year of the Proleptic 1580s decade. However, this year also saw the beginning of the Gregorian Calendar switch, when the Papal bull known as Inter gravissimas introduced the Gregorian calendar, adopted by Spain, Portugal, the Polish–Lithuanian Commonwealth and most of present-day Italy from the start. In these countries, the year continued as normal until Thursday, October 4. However, the next day became Friday, October 15, in those countries. Other countries continued using the Julian calendar, switching calendars in later years, and the complete conversion of the Gregorian calendar was not entirely done until 1929.
1618 (MDCXVIII) was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1618th year of the Common Era (CE) and Anno Domini (AD) designations, the 618th year of the 2nd millennium, the 18th year of the 17th century, and the 9th year of the 1610s decade. As of the start of 1618, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
Year 1568 (MDLXVIII) was a leap year starting on Thursday of the Julian calendar.
1600 (MDC) was a century leap year starting on Saturday of the Gregorian calendar and a leap year starting on Tuesday of the Julian calendar. It was the last century leap year until the year 2000.
1601 (MDCI) was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar. As of the start of 1601, the Gregorian calendar was 10 days ahead of the Julian calendar. This epoch is the beginning of the 400-year Gregorian leap-year cycle within which digital files first existed; the last year of any such cycle is the only leap year whose year number is divisible by 100.
1602 (MDCII) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1602nd year of the Common Era (CE), and Anno Domini (AD) designations, the 602nd year of the 2nd millennium, the 2nd year of the 17th century, and the 3rd year of the 1600s decade. As of the start of 1602, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1615 (MDCXV) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1615th year of the Common Era (CE) and Anno Domini (AD) designations, the 615th year of the 2nd millennium, the 15th year of the 17th century, and the 6th year of the 1610s decade. As of the start of 1615, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
Year 1540 (MDXL) was a leap year starting on Thursday of the Julian calendar.
1590 (MDXC) was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar. As of the start of 1590, the Gregorian calendar was 10 days ahead of the Julian calendar.
1584 (MDLXXXIV) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Wednesday of the Julian calendar. As of the start of 1584, the Gregorian calendar was 10 days ahead of the Julian calendar.
Year 1580 (MDLXXX) was a leap year starting on Friday of the Julian calendar, and a leap year starting on Tuesday of the Proleptic Gregorian calendar.
Year 1579 (MDLXXIX) was a common year starting on Thursday of the Julian calendar, and a common year starting on Monday of the Proleptic Gregorian calendar.
Year 1578 (MDLXXVIII) was a common year starting on Wednesday of the Julian calendar.
Year 1577 (MDLXXVII) was a common year starting on Tuesday of the Julian calendar.
Year 1567 (MDLXVII) was a common year starting on Wednesday of the Julian calendar.
Year 1563 (MDLXIII) was a common year starting on Friday of the Julian calendar.
Year 1538 (MDXXXVIII) was a common year starting on Tuesday of the Julian calendar.
Year 1532 (MDXXXII) was a leap year starting on Monday of the Julian calendar.
