1782 (MDCCLXXXII) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Saturday of the Julian calendar, the 1782nd year of the Common Era (CE) and Anno Domini (AD) designations, the 782nd year of the 2nd millennium, the 82nd year of the 18th century, and the 3rd year of the 1780s decade. As of the start of 1782, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.