Hi Wildman800,
The azimuth direction where the ecliptic (green line in the picture below) bisects the horizon will depend on the latitude of the observer and time of year. True north will just be the angle you look up from a prepared table added to the azimuth direction.
Example;
Date 10th June 2008
Latitude 58° 28' N
Sunset 22:17
Azimuth direction to sunset 320° 35' degrees
Angle between Sunset and true north = 39° 25' degrees
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