2013 (MMXIII) was a common year starting on Tuesday of the Gregorian calendar, the 2013th year of the Common Era (CE) and Anno Domini (AD) designations, the 13th year of the 3rd millennium and the 21st century, and the 4th year of the 2010s decade.

2012 (MMXII) was a leap year starting on Sunday of the Gregorian calendar, the 2012th year of the Common Era (CE) and Anno Domini (AD) designations, the 12th year of the 3rd millennium and the 21st century, and the 3rd year of the 2010s decade.