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Template:Year nav Template:C19YearInTopicX Year 1866 (MDCCCLXVI) was a common year starting on Monday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Saturday of the 12-day-slower Julian calendar).

Events of 1866Edit

January - MarchEdit

April - JuneEdit

July - SeptemberEdit

October - DecemberEdit