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This article is about the year 1611.
Millennium: 2nd millennium
Centuries: 16th century17th century18th century
Decades: 1580s  1590s  1600s  – 1610s –  1620s  1630s  1640s
Years: 1608 1609 161016111612 1613 1614
1611 by topic:
Arts and Science
Architecture - Art - Literature - Music - Science
Lists of leaders
Colonial governors - State leaders
Birth and death categories
Births - Deaths
Establishments and disestablishments categories
Establishments - Disestablishments
Works category

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February - Sunspots seen.

1611 (MDCXI) was a common year starting on Saturday (dominical letter B) of the Gregorian calendar and a common year starting on Tuesday (dominical letter F) of the Julian calendar, the 1611th year of the Common Era (CE) and Anno Domini (AD) designations, the 611th year of the 2nd millennium, the 11th year of the 17th century, and the 2nd year of the 1610s decade. Note that the Julian day for 1611 is 10 calendar days difference, which continued to be used from 1582 until the complete conversion of the Gregorian calendar was entirely done in 1929.




Date unknown




  1. Thony, C. (2011-01-08). "Spotting the spots". The Renaissance Mathematicus. Archived from the original on 21 July 2011. Retrieved 2011-08-09.