1985 (MCMLXXXV) was a common year starting on Tuesday of the Gregorian calendar, the 1985th year of the Common Era (CE) and Anno Domini (AD) designations, the 985th year of the 2nd millennium, the 85th year of the 20th century, and the 6th year of the 1980s decade.

1984 (MCMLXXXIV) was a leap year starting on Sunday of the Gregorian calendar, the 1984th year of the Common Era (CE) and Anno Domini (AD) designations, the 984th year of the 2nd millennium, the 84th year of the 20th century, and the 5th year of the 1980s decade.