1723 followed by 1724
1723 (MDCCXXIII) was a common year starting on Friday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1723rd year of the Common Era (CE) and Anno Domini (AD) designations, the 723rd  year of the 2nd millennium, the 23rd  year of the 18th century, and the  4th   year of the 1720s decade. As of the start of 1723, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.