Tools Astrocalculator The &kstars; Astrocalculator provides several modules that give you direct access to algorithms used by the program. The modules are organized by subject: Julian Day Sidereal Time Almanac Equinoxes and Solstices Equatorial/Galactic Coordinates Apparent Coordinates Horizontal Coordinates Ecliptic Coordinates Angular Distance Geodetic Coordinates Planets Coordinates &calc-julian; &calc-sidereal; &calc-dayduration; &calc-equinox; &calc-eqgal; &calc-apcoords; &calc-horiz; &calc-ecliptic; &calc-angdist; &calc-geodetic; &calc-planetcoords;