NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Bearing of the sun at a given time from a given position
From: Henry Halboth
Date: 2015 Nov 18, 23:36 -0500
From: Henry Halboth
Date: 2015 Nov 18, 23:36 -0500
Hi Steve,
Sorry for the confusion -the answer to your question is yes. The azimuth of any celestial body is an angle of the astronomical triangle, i.e.,the angle at the zenith between the meridian of the observer and the hour circle passing through the observer's zenith (position) and a celestial body and, as such, may be solved for in a number of ways. Normally employed are the Amplitude (at rising or setting) the Altitude, or the Time methods, each of which employs a somehat different mode of computation. Although each method of sight reduction for a LOP includes the determination of an Azimuth, in the current electronic navigation era the primary use of the Azimuth at sea is in the determination of the Compass Error - unless something new has been discovered whilst I have been napping - and generally utilizes rhe Time Azimuth method. If you are interested in going further, just ask - its not really that complicated.
Regards,
Henry
On Wed, Nov 18, 2015 at 2:00 AM, Steve E. Bryant <NoReply_Bryant@fer3.com> wrote:
Dear Navlisters,
If it is possible, how would one calculate the azimuth, Zn, of the sun if all that were given is the date and time, and the latitude/ longitude of position?
Best regards,
Steve
