WikiProject Years
This article is within the scope of WikiProject Years, a collaborative effort to improve the coverage of Years on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.

## BC to BCE

"BC" should be changed to "BCE" (Before Common Era); consistent with usage recommended by the American Historical Association. 20:51, 25 Aug 2005 (UTC) soverman

Ironically you are being American-centric by saying that if an American institution recommends something, we should follow through. Kransky 14:04, 13 September 2006 (UTC)

Shouldn't we explain here what decades are rather than just list them???? (talk)--BozMo 20:43, 10 May 2004 (UTC)

Good idea, put it in Kransky 14:04, 13 September 2006 (UTC)

Decades: "This page refers to a period of ten years." - no it doesn't. Decades refers to periods of ten years. A decade is a unit of time equal to (a period of) ten years. We have now lost that information from wikipedia by replacing an article with a redirect. Ian Cairns 00:05, 16 Oct 2004 (UTC) Count your digits. You start at one and proveed to ten just like with decades.10:45, 21 February 2007 (UTC)

## Unsourced comment

Some commentators suggest that this phenomenon will not continue into the 21st Century with its decades really? Wow...I would just love to know speculated this and the basis of their reasoning! Kransky 14:04, 13 September 2006 (UTC)

It was nonsense the last time this was added, and it's still nonsense. — Arthur Rubin (talk) 08:00, 2 January 2010 (UTC)

If it is nonsense then tell me which decade since Christ is the one with only 9 years. Also explain how you count out (oh, say pennies) 1000 of anything in 10's or 100's or 1000's with the count ending in a number with a 9 in the singles column? robertjerl 1-2-2010 —Preceding unsigned comment added by 76.90.129.95 (talk) 18:23, 2 January 2010 (UTC)

Exactly, all of the decade entries I've seen here are incorrect. All centuries and decades begin in a year ending in one and end in a year ending in zero. There was no Year Zero, meaning that the first day of the first decade of the first century, AD, was January 1, 1.

The last day of the first decade was December 31, 10 and the last day of the first century was December 31, 100, not 12/31/99. Unless you're going to write off the first century as being only 99 years long, you have to begin and end decades and centuries on one and zero.

It's counter-intuitive, I know, but use your fingers and prove it for yourself.

http://en.wikipedia.org/wiki/1st_century

http://en.wikipedia.org/wiki/21st_century

http://en.wikipedia.org/wiki/Anno_Domini

[[User:Richardkeefe57 —Preceding unsigned comment added by Richardkeefe57 (talkcontribs) 00:48, 19 March 2010 (UTC)

This article should be adjusted according to algorithm as follows: All years xx01-xx10 are "First" years of xx+1 century All years xx11-xx20 are "(please find here appropriate term in English, in Russian it sounds like "Tenths" years of xx+1 century All years xx21-xx30 are "twenties" of xx+1 century All years xx31-xx40 are "thirties" of xx+1 century and so on. Front315 —Preceding unsigned comment added by 95.26.32.76 (talk) 14:04, 10 August 2010 (UTC)

No. I can't argue that ru.Wikipedia shouldn't work that way, but ours shouldn't, per long-standing consensus. — Arthur Rubin (talk) 09:15, 11 August 2010 (UTC)