The azimuth angle Az of the Sun or a celestial body (St) is depending on it's declination Dec and altitude Alt, and on the latitude Lat of the observer (Astronomical/Nautical Triangle): At sunrise (Alt=0°) the formula is more simple: The following
diagram is showing the azimuth angle at sunrise for different
declinations (Dec=0°, 5°, 10°, 15°, 20°, 23.4°)
as a function of latitude:
Using the Local
Hour Angle (LHA) the azimuth angle is given by:

