double altitude(double lon, double lat, int year, int month, int day, int hour, int min, int zone);
double azimuth(double lon, double lat, int year, int month, int day, int hour, int min, int zone);
double moon_phase(int year, int month, int day);
+void sun_rise_set(double lon, double lat,
+ int year, int month, int day,
+ int zone,
+ int * hourrise, int *minrise, int *hourset, int *minset);
+
/*******************************************************************************/
#endif