Re: Imprecision of DAYS_PER_MONTH

From: Bruno Wolff III <bruno(at)wolff(dot)to>
To: Dann Corbit <DCorbit(at)connx(dot)com>
Cc: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Greg Stark <gsstark(at)mit(dot)edu>, Tino Wildenhain <tino(at)wildenhain(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, "Marc G(dot) Fournier" <scrappy(at)postgresql(dot)org>
Subject: Re: Imprecision of DAYS_PER_MONTH
Date: 2005-07-22 19:42:01
Message-ID: 20050722194201.GA5032@wolff.to
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On Fri, Jul 22, 2005 at 12:27:50 -0700,
Dann Corbit <DCorbit(at)connx(dot)com> wrote:
> Apparently, the Gregorian calendar has been fixed. From this:
> http://www.physics.uq.edu.au/people/ross/phys2081/time/calendar.htm
>
> We have this:
> "The Gregorian calendar has been modified since (before anything could
> go wrong) to bring the Gregorian 365.2425 down to 365.2422 by cutting
> out "leap centuries" that are divisible by 4000 thus giving an accuracy
> of about one day in 20,000 years"

That's interesting. So now we will have a year 4000 problem when there
isn't a leap year as was previously scheduled.

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