1884 (MDCCCLXXXIV) was a leap year starting on Tuesday of the Gregorian calendar and a leap year starting on Sunday of the Julian calendar, the 1884th year of the Common Era (CE) and Anno Domini (AD) designations, the 884th year of the 2nd millennium, the 84th year of the 19th century, and the 5th year of the 1880s decade. As of the start of 1884, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
