Year 1661 (MDCLXI) was a common year starting on Saturday (link will display the full calendar) of the Gregorian calendar and a common year starting on Tuesday of the 10-day slower Julian calendar.
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Year 1661 (MDCLXI) was a common year starting on Saturday (link will display the full calendar) of the Gregorian calendar and a common year starting on Tuesday of the 10-day slower Julian calendar.