Greg Milsom wrote: > > Today I learned that one of the reasons my new dial was not as exact as > I had hoped was because the magnetic variation I was using to align the > dial was several years old and that magnetic variation does in fact > change over time. I am now searching material on the web that seems to > indicate that the Equation of Time figures that are in the back of > Albert Waugh's book may also be somewhat old and need updated for 1998. > Please let me know if the EoQ number do in fact change and how I can > calculate the change using an Excel spreadsheet. thanks.
For a program to calculate the equation of time and the sun's declination have a look at : http://www.iaehv.nl/users/ferdv/compute.htm and then page endnotes. There you can download the program equadecl.zip Fer de Vries.
