sunMoon.h

#ifndef _SUN_MOON_H
#define _SUN_MOON_H

#include <Time.h>
#include <TimeLib.h>
#include <math.h>

class sunMoon {
  public:
    sunMoon() {}
    bool init(int Timezone, float Latitude, float Longitude);    // Timezone in minutes
    uint32_t julianDay(time_t date = 0);
    uint8_t moonDay(time_t date = 0);
    time_t sunRise(time_t date = 0);
    time_t sunSet(time_t date = 0);
    enum forecast { day_dangerous, day_unhappy, day_normal, day_happy, day_happiest };
    sunMoon::forecast dayForecast(char mDay = -1);              // moonage [0-29]  
  private:
    int tz;                                                     // GMP offset in minutes
    float longitude, latitude;
    time_t sunTime(bool sunRise, time_t date = 0);
    float normalize(float v);
    const float toRad = M_PI/180.0;
    const float toDeg = 180.0/M_PI;
    const float twoPi = 2 * M_PI;
    const float zenith = 90.83 * toRad;
/* zenith:                Sun's zenith for sunrise/sunset
    offical      = 90 degrees 50'
    civil        = 96 degrees
    nautical     = 102 degrees
    astronomical = 108 degrees
*/
};

#endif