Re: February 30th 2000

From: H. Peter Anvin (hpa@transmeta.com)
Date: Thu Jan 13 2000 - 12:46:36 EST


"Richard B. Johnson" wrote:
>
> On 12 Jan 2000, H. Peter Anvin wrote:
>
> > Followup to: <200001122154.OAA07786@webber.adilger.net>
> > By author: Andreas Dilger <adilger@home.com>
> > In newsgroup: linux.dev.kernel
> > >
> > > Daniel writes:
> > > > This year we're going to have the day February 30th and neither Linux, AIX,
> > > > Windows NT, 98, 95 know this problem. Feb30th happens each 400 years (Last
> > > > time we had that was year 1600). There's a webpage (in portuguese) from IDG
> > > > http://www.uol.com.br/idgnow/corp/corp2000-01-10e.shl (you can translate it
> > > > at http://babelfish.altavista.com/cgi-bin/translate)
> > >
> > > This is totally wrong. The year 2000 is not even a leap year (i.e. NO Feb 29
> > > either), so your source of information is incorrect. It is completely
> > > unlikely that all of these independently created OSs have gotten this wrong,
> > > despite what one thinks of some of them.
> > >
> >
> > 2000 is a leap year. A regular one. On the Gregorian calendar, 1700,
> > 1800, 1900, 2100, 2200 and 2300 are not leap years, but 1600, 2000,
> > and 2400 are. Note that when a certain jurisdiction switched to the
> > Gregorian calendar is, at one level, irrelevant -- it is
> > perfectly legitimate to refer to the year 400 on the Gregorian
> > calendar being a leap year, despite the fact that the Gregorian
> > calendar was invented in the 16th Century AD.
> >
> > -hpa
> > --
>
> Err. My calendar seems okay to me <grin>. Some folks believe everything
> they see in text. Especially if it was presented on a computer screen.
>
> Script started on Thu Jan 13 09:37:08 2000
> # cal 2000
> 2000
>
> January February March
> Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa
> 1 1 2 3 4 5 1 2 3 4 5
> 2 3 4 5 6 7 8 6 7 8 9 10 11 12 6 7 8 9 10 11 12
> 9 10 11 12 13 14 15 13 14 15 16 17 18 19 13 14 15 16 17 18 19
> 16 17 18 19 20 21 22 20 21 22 23 24 25 26 20 21 22 23 24 25 26
> 23 24 25 26 27 28 29 27 28 29 30 27 28 29 30 31
> 30 31
> April May June

Mine doesn't seem to have that bug.

: cesium 6 ; cal 2000
                               2000

       January February March
Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa
                   1 1 2 3 4 5 1 2 3 4
 2 3 4 5 6 7 8 6 7 8 9 10 11 12 5 6 7 8 9 10 11
 9 10 11 12 13 14 15 13 14 15 16 17 18 19 12 13 14 15 16 17 18
16 17 18 19 20 21 22 20 21 22 23 24 25 26 19 20 21 22 23 24 25
23 24 25 26 27 28 29 27 28 29 26 27 28 29 30 31
30 31
        April May June

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Sat Jan 15 2000 - 21:00:23 EST