Hi Matt, On Tue, 19 Oct 2004, Matt Sisk wrote:
> [EMAIL PROTECTED] wrote: > > >Hi Joshua, > > > >I am not sure about this. I need to check with Paul to see if this is valid. > > > > > > "Valid"? Other than the patch he submitted appeared to not take into > account a decimal place, there's nothing "invalid" about the suggestion. I probably should have tested that patch before submitting it. :) You are correct that it needs to allow a decimal place. > The regular expression encompasses values that are generally agreed upon > to be civil/nautical/astronomical twighlight (i.e. dusk), plus when the > lower disk of the sun touches horizon at sea level, middle of the sun, > etc. Same for dawn. Other than these socially based standards, the same > equations work perfectly well for arbitrary angles of elevation. Correct again. :) -J --
