1676 followed by 1677
1676 (MDCLXXVI) was a leap year starting on Wednesday of the Gregorian calendar and a leap year starting on Saturday of the Julian calendar, the 1676th year of the Common Era (CE) and Anno Domini (AD) designations, the 676th  year of the 2nd millennium, the 76th  year of the 17th century, and the  7th   year of the 1670s decade. As of the start of 1676, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.