The Sunrise Calculator !
Sunrise = 6 Hrs + Equation of Time - Ascensional Difference - Refraction Correction
Asc Difference = Sin C = Tan Phi Tan Delta
Sun's Declication = Sin J Sin w
With these formulae, Sunrise can easily be computed.
Elementary, my dear Watson !
Our software, Ephemeris 9.0 has many caculations - even an Ephemeris Generator - Longitudes Calculator, Planetary Hours Calculator, Ahargana Calculator et al.