On Tue, 6 Jul 2004, Roger W. Sinnott wrote: > John and others, > > Maybe I'm being dense, but isn't the variation of the equation of time > with longitude masked (or at least complicated) by the similar > variation, from one year to the next, due to our use of a 365-day > calendar and occasional leap year? > > It's hard for me to imagine that the longitude deviation would ever need > to be included in a sundial design. (But if one is observing a noon > transit of the Sun in a specific year and calendar date for establishing > a true north-south line, then it *would* be helpful.) > > -- Roger > > > At 01:39 PM 7/5/2004 -0700, John Carmichael wrote: > >Hello All: > > > >Does anybody know if there is a program, spreadsheet or website that > >will calculate EOT values corrected for specific longitudes in either a > >graph or a table?
Roger, are you thinking John was looking for some annual correction to longitude, or the like? I thought he was simply looking to include the time-zone offset (Local to Standard) in the EOT table. Dave -
