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» Online Classroom   »   » Public Discussion of Cel Nav   » Perpetual Almanac

Author Topic: Perpetual Almanac

 - posted May 16, 2007 10:13 PM      Profile for MTrainor           Edit/Delete Post 
I recently bought a copy of "Long Term Almanac 2000-2050" by Geoffrey Kolbe.
The introduction points out "the fact that approximately correct values for the position of the Sun and the GHA of Aries may be obtained from an almanac that is exactly four years out of date"
My questions is...If I had four Nautical Almanacs, say 2000, 2001, 2002 and 2003, would using the daily page information on the Planets and moon be accurate to use as well?

From: Mesa, AZ
David Burch

 - posted May 16, 2007 11:23 PM      Profile for David Burch           Edit/Delete Post 
The every 4 years repeat is only for sun and stars. Moon and planet data can only be taken from the actual current almanac.... or from a software program like our Perpetual Almanac.
From: Starpath, Seattle, WA

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