On Sat, Oct 23, 2004 at 23:51:20 -0500,
Bruno Wolff III <bruno@wolff.to> wrote:
> One value I found for a solar year is 365 days, 5 hours, 48 minutes, 45.51
> seconds.
Wikipedia gives 365.242189670 days (86400 seconds) as the length of the
mean solar year in 2000. To give you some idea of how constant that values is,
Wikipedia claims that 2000 years ago the mean solar year was about 10 seconds
longer.
Using the above value I get there is an average of 2629743 seconds in a month.
And yet another option is to note that in the Gregorian calendar there are
400*365+97 days or 400*12 months in 400 years, which gives 2629746 seconds
per month on average.