answersLogoWhite

0

Although any period of 10 years is a decade, a convenient and frequently referenced interval is based on the tens digit of a calendar year, as in using "1960s" to represent the decade from 1960 to 1969.

Because the common calendar starts with year 1, its firstfull decade is the years 1 to 10, the second decade from 11 to 20, and so on. So while the "2000s" comprises the years 2000 to 2009, the "201st decade" spans 2001 to 2010. For this reason, most people would consider the fourth year of the decade to be the one ending in 4.

User Avatar

Wiki User

10y ago

What else can I help you with?