1759 (MDCCLIX) was a common year starting on Monday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1759th year of the Common Era (CE) and Anno Domini (AD) designations, the 759th year of the 2nd millennium, the 59th year of the 18th century, and the 10th and last year of the 1750s decade. As of the start of 1759, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923. In Great Britain, this year was known as the Annus Mirabilis, because of British victories in the Seven Years' War.