Is 2010 the last year of the old decade, or the first year of the new???

[Quarterpoundher]

So technically 2010 is part of the first decade of this millenium but in practise it is considered the first year of the second decade.

We're sorted so, its an anomaly of history as regards AD 0 but more practical to call it first year of next decade. Lets face it, who would have felt right celebrating the millennium at the end of 2000?

Wonder what posters chiseling on a slab of rock in AD 0 had to say about it.

[luther]

With regards to AD and BC, why then is Janurary 1st the epoch and not the 25th of December, or good Friday???

A bit lunar I'd say........

[nicegirlsarenice]

But we all lived 365 days of 1980 1990 2000 etc so 0 does have a value when it comes to time. 0 to 9 is ten digits, 0 to 10 is 11 digits. It makes more sense to work from 0 to 9 so I would say 2010 is the first year of the next decade.

Yes, we lived all ~365 days of them and they were still all part of the decade of the previous 9 years.

There's no "practical" about it and it doesn't make more sense or anything like that. It's just YOU psychologically. If you want to argue that you cannot deal with the immense complexity of it, then you'd be arguing for a change of calender or the definition of decade.

Carlos' post was the definitive answer. Don't give up the dayjob to become a mathematician.

[Quarterpoundher]

Yes, we lived all ~365 days of them and they were still all part of the decade of the last 9 years.

Carlos' post was the definitive answer. Don't give up the dayjob to become a mathematician.

I was only replying to West saying that 0 did not have a value. It does or else we would all be wasting 365 days every time we reach the end of a decade, or start of one depending on pov.

Don't you give up the day job with the rape crisis center.

[rover]

1st Jan 2001 - Dec 31st 2001 = first year

1st Jan 2002 - Dec 31st 2002 = second year

1st Jan 2003 - Dec 31st 2003 = third year

1st Jan 2004 - Dec 31st 2004 = fouth year

1st Jan 2005 - Dec 31st 2005 = fifth year

1st Jan 2006 - Dec 31st 2006 = sixth year

1st Jan 2007 - Dec 31st 2007 = seventh year

1st Jan 2008 - Dec 31st 2008 = eighth year

1st Jan 2009 - Dec 31st 2009 = ninth year

1st Jan 2010 - Dec 31st 2010 = tenth year

1st Jan 2011 - Dec 31st 2011 = first year of new decade

I dunno, just copied and pasted it.

[Lou Cefer]

1st Jan 2001 - Dec 31st 2001 = first year

1st Jan 2002 - Dec 31st 2002 = second year

1st Jan 2003 - Dec 31st 2003 = third year

1st Jan 2004 - Dec 31st 2004 = fouth year

1st Jan 2005 - Dec 31st 2005 = fifth year

1st Jan 2006 - Dec 31st 2006 = sixth year

1st Jan 2007 - Dec 31st 2007 = seventh year

1st Jan 2008 - Dec 31st 2008 = eighth year

1st Jan 2009 - Dec 31st 2009 = ninth year

1st Jan 2010 - Dec 31st 2010 = tenth year

1st Jan 2011 - Dec 31st 2011 = first year of new decade

I dunno, just copied and pasted it.

Technically that is right however if you follow it through you end up with 2030 being in the 20s and 2040 being in the 30s.
So by convention 00 to 09 is the first decade and 10 to 19 is the second etc as it makes more sense that way. And as none of us were around in the first decade 1 AD to 9 AD none of us missed out on a year.