Year 1891 (MDCCCXCI) was a common year starting on Thursday (link will display the full calendar) of the Gregorian calendar and a common year starting on Tuesday of the 12-day slower Julian calendar.
Year 1891 (MDCCCXCI) was a common year starting on Thursday (link will display the full calendar) of the Gregorian calendar and a common year starting on Tuesday of the 12-day slower Julian calendar.