AmeriCAN-DO Attitude

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Um, Hello? 2010 is NOT the Start of the Next Decade

Has our society broken down so much that we have forgotten how to count to 10?!!?

Let me break it down for you…

There was no Year Zero. Is there a Month Yero? No, January is Month 1. Is there a Day Zero? No, today is Day 1 of Month 1 of Year 2010.

Now, expanding on that, we understand that 2010 is the 10th Year of the 1st Decade of the 21st Century. 2011 will be the start of the next decade. It will be the 1st Year of the 2nd Decade of the 21st Century.

1st Century: 1 AD – 100 AD
2nd Century: 101 AD to 200 AD
3rd Century: 201 AD to 300 AD
4th Century: 301 AD to 400 AD
5th Century: 401 AD to 500 AD
6th Century: 501 AD to 600 AD
7th Century: 601 AD to 700 AD
8th Century: 701 AD to 800 AD
9th Century: 801 AD to 900 AD
10th Century: 901 AD to 1000 AD
11th Century: 1001 AD to 1100 AD
12th Century: 1101 AD to 1200 AD
13th Century: 1201 AD to 1300 AD
14th Century: 1301 AD to 1400 AD
15th Century: 1401 AD to 1500 AD
16th Century: 1501 AD to 1600 AD
17th Century: 1601 AD to 1700 AD
18th Century: 1701 AD to 1800 AD
19th Century: 1801 AD to 1900 AD
20th Century: 1901 AD to 2000 AD
21st Century: 2001 AD to 2100 AD


1st Decade (of 1st Century): 1 AD to 10 AD
2nd Decade: 11 AD to 20 AD
3rd Decade: 21 AD to 30 AD
4th Decade: 31 AD to 40 AD
5th Decade: 41 AD to 50 AD
6th Decade: 51 AD to 60 AD
7th Decade: 61 AD to 70 AD
8th Decade: 71 AD to 80 AD
9th Decade: 81 AD to 90 AD
10th Decade: 91 AD to 100 AD

1st Decade (of 2nd Century): 101 AD to 110 AD

[ . . . ]

1st Decade (of 3rd Century): 201 AD to 210 AD

[ . . . ]

1st Decade (of 21st Century): 2001 AD to 2010 AD


And, for that matter, 2000 was not the start of the next millenium. 2001 was the start of the 3rd Millenium.

Millenium 1: 1 AD to 1000 AD
Millenium 2: 1001 AD to 2000 AD
Millenium 3: 2001 AD to 3000 AD


January 1, 2010 , 1:21PM - Posted by | Life, Political Correctness, Public Education


  1. Thank you for making this point. I have this argument with people every 10 years or so.

    Comment by criblecoblis | January 1, 2010 , 10:48PM

    • I really did not care too much about it until I heard someone call into a local radio show here — 97.1 FM The Ticket, Detroit, MI — and bring up this point. He then had the DJs and all the rest of the callers on the show call him an idiot. So then it started to annoy me. Then I saw the argument made on a popular right-of-center blog I read and then I started seeing my ‘friends’ on Facebook make the same argument as well. And it annoyed me even more.

      They gave the typical argument: “You’re saying that 1990 is part of the 1980s! That’s stupid! You’re an idiot!” Except, that is not what he — nor I — was doing at all. He was simply stating that, since there was no ‘Year Zero’, dating starts with Year 1 AD. Thus, the ‘next decade’ always starts after counting 1-to-10. This does not mean that 1990 AD is part of ‘the 1980s’, but it does mean that 1990 AD is the 10th Year of the 9th Decade of the 20th Century. It’s as simple as that.

      People can continue to come up with catchy labels for arbitrary decades — such as calling 1990-1999 “the 1990s” — but it does not change the fact that official decades are counted 1 to 10, not 0 to 9.

      Meh. Ah well. It’s annoying, but I guess not all that important. But now by making this post, I can at least save myself the time of typing this out over and over again when I come across people arguing with me over this.

      Comment by Michael in MI | January 1, 2010 , 10:59PM

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