1628

1628 (MDCXXVIII) was a leap year starting on Saturday of the Gregorian calendar and a leap year starting on Tuesday of the Julian calendar, the 1628th year of the Common Era (CE) and Anno Domini (AD) designations, the 628th year of the 2nd millennium, the 28th year of the 17th century, and the 9th year of the 1620s decade. As of the start of 1628, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.