Year 1880 (MDCCCLXXX) was a leap year starting on Thursday (link will display the full calendar) of the Gregorian calendar and a leap year starting on Tuesday of the 12-day slower Julian calendar.
Year 1880 (MDCCCLXXX) was a leap year starting on Thursday (link will display the full calendar) of the Gregorian calendar and a leap year starting on Tuesday of the 12-day slower Julian calendar.