Re: Imprecision of DAYS_PER_MONTH
От | Bruce Momjian |
---|---|
Тема | Re: Imprecision of DAYS_PER_MONTH |
Дата | |
Msg-id | 200507221903.j6MJ3Dc13936@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: Imprecision of DAYS_PER_MONTH (Bruno Wolff III <bruno@wolff.to>) |
Список | pgsql-hackers |
Bruno Wolff III wrote: > On Thu, Jul 21, 2005 at 13:47:29 -0700, > Dann Corbit <DCorbit@connx.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. Someone came up with 365.2422. Which is better? -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania19073
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