????????? ???? 1880 ( MDCCCLXXX ) ??? a leap year starting on ?????????????? ? ?????? ????? ???????? ?????  and a leap year starting on Tuesday of the Julian calendar , the 1880 ?? year of the Common Era (CE) and Anno Domini (AD) designations, 2 ?? ??????????? ??? 880 ?? ???, 19 ?? ????? ??? 80 ?? ???, ?? 1880???? ??????? 1 ?? ??? between 1583 and 1929 and with Julian Value: 1880 is 12 calendar days difference, which continued to be used until the complete conversion of the Gregorian calendar was entirely done in 1929 .