2011 (MMXI) was a common year starting on Saturday of the Gregorian calendar, the 2011th year of the Common Era (CE) and Anno Domini (AD) designations, the 11th year of the 3rd millennium and the 21st century, and the 2nd year of the 2010s decade.

2010 (MMX) was a common year starting on Friday of the Gregorian calendar, the 2010th year of the Common Era (CE) and Anno Domini (AD) designations, the 10th year of the 3rd millennium and the 21st century, and the 1st year of the 2010s decade.