
Is it a new decade or not?
As we approach the new year, the calendar will switch to 2010 and many will recognize this as the start of a new decade just like most everyone recognized January 1, 2000 as the start of a new century and millennium. The problem is, this is technically incorrect.
Sort of.
If you go all the way back to the start of the calendar we use, the first day was January 1, 0001. There was no year 0. This means that the first decade, or ten year period, went from January 1, 0001 through December 31, 0010 with the second decade starting on January, 1, 0011. This ten year cycle would never change during the course of the next 2000+ years so for those of us alive today, the next decade technically doesn’t start until January 1, 2011. Yes, this means all the hullaballoo around the celebrations on December 31, 1999 were only because the numbers on the calendar were changing to 2000. We were not technically celebrating the start of a new decade, century, or millennium if you were counting from the beginning of our current calendar. Those all officially happened on January 1, 2001.
It’s a weird debate and both sides can technically claim they are correct. By definition, a decade is any period of 10 consecutive years no matter when you start counting. From a societal standpoint, we’ve always refered to decades by the numbers on them so the 80’s ran from the ten year period from 1980 through 1989. So for many, 2010 is the start of a new decade because they started counting in 2000, which is fine. After all, if we didn’t do it this way then 1980 was actually part of the 70’s which is really lame and would totally mess up all those Best of the decade shows on VH1.