Unit dec [Gregorian]
Name decade
Category Time
Details A unit "decade" in the context of the Gregorian calendar and the field of Time refers to a period of 10 consecutive years. The Gregorian calendar is the calendar system most widely used in the world today, introduced by Pope Gregory XIII in 1582. In this calendar, a decade begins with a year ending in "0" and ends with a year ending in "9". For example, the decade 2000-2009 or 1990-1999 would each be considered a Gregorian decade. This unit of measurement is often used when discussing historic events, trends, or patterns over time.