| 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 16:51:11 |
| Message-ID: | 20050722165111.GA22231@wolff.to |
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| Lists: | pgsql-hackers |
On Thu, Jul 21, 2005 at 13:47:29 -0700,
Dann Corbit <DCorbit(at)connx(dot)com> wrote:
> In round figures:
>
> Since there are 365.2422 days per tropical year, there are 31556926
> seconds per year (give or take leap seconds).
>
> Ref:
> http://www.grc.nasa.gov/WWW/K-12/Numbers/Math/Mathematical_Thinking/cale
> ndar_calculations.htm
According to the current calendar (again ignoring leap seconds) there
are exactly 365.2425 days per year on average. I think it makes sense to use
this number when dealing with calendar years and months.
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