R.Brandenburg. For navigators , H.O.no.117 "Azimuths of the Sun" was in the era available. For precision I used the underlying formula from spherics : {cos Az = +/- sin d - (sin h . sin L)} / (cos h . cos L). Shorter formulas , giving sin Az , exist but the outcomes are ambiguous. For sunrise/sunset at June , December , 21st : Az = sin d / cos L . Results always for centre of sun . Az = azimuth from South , d = declination , h = elevation , L = latitude , all in degrees , arcminutes & -seconds.