public static void GetMoonIllumination(DateTime date, Celestial c)
{
date = new DateTime(date.Year, date.Month, date.Day, 0, 0, 0, DateTimeKind.Utc);
double d = toDays(date);
CelCoords s = GetSunCoords(d);
CelCoords m = GetMoonCoords(d);
double sdist = 149598000,
phi = Math.Acos(Math.Sin(s.dec) * Math.Sin(m.dec) + Math.Cos(s.dec) * Math.Cos(m.dec) * Math.Cos(s.ra - m.ra)),
inc = Math.Atan2(sdist * Math.Sin(phi), m.dist - sdist * Math.Cos(phi)),
angle = Math.Atan2(Math.Cos(s.dec) * Math.Sin(s.ra - m.ra), Math.Sin(s.dec) * Math.Cos(m.dec) -
Math.Cos(s.dec) * Math.Sin(m.dec) * Math.Cos(s.ra - m.ra));
MoonIllum mi = new MoonIllum();
mi.Fraction = (1 + Math.Cos(inc)) / 2;
mi.Phase = 0.5 + 0.5 * inc * (angle < 0 ? -1 : 1) / Math.PI;
mi.Angle = angle;
c.MoonPhase = mi.Phase;
}
public static void GetMoonIllumination(DateTime date, Celestial c, double lat, double lng)
{
date = new DateTime(date.Year, date.Month, date.Day, date.Hour, date.Minute, date.Second, DateTimeKind.Utc);
double d = toDays(date);
CelCoords s = GetSunCoords(d);
CelCoords m = GetMoonCoords(d, c);
double sdist = 149598000,
phi = Math.Acos(Math.Sin(s.dec) * Math.Sin(m.dec) + Math.Cos(s.dec) * Math.Cos(m.dec) * Math.Cos(s.ra - m.ra)),
inc = Math.Atan2(sdist * Math.Sin(phi), m.dist - sdist * Math.Cos(phi)),
angle = Math.Atan2(Math.Cos(s.dec) * Math.Sin(s.ra - m.ra), Math.Sin(s.dec) * Math.Cos(m.dec) -
Math.Cos(s.dec) * Math.Sin(m.dec) * Math.Cos(s.ra - m.ra));
MoonIllum mi = new MoonIllum();
mi.Fraction = (1 + Math.Cos(inc)) / 2;
mi.Phase = 0.5 + 0.5 * inc * (angle < 0 ? -1 : 1) / Math.PI;
mi.Angle = angle;
c.MoonIllum = mi;
string moonName = "";
int moonDate = 0;
//GET PHASE NAME
//CHECK MOON AT BEGINNING AT END OF DAY TO GET DAY PHASE IN UTC
DateTime dMon = new DateTime(date.Year, date.Month, 1);
for (int x = 1; x <= date.Day; x++)
{
DateTime nDate = new DateTime(dMon.Year, dMon.Month, x, 0, 0, 0, DateTimeKind.Utc);
d = toDays(nDate);
s = GetSunCoords(d);
m = GetMoonCoords(d, c);
phi = Math.Acos(Math.Sin(s.dec) * Math.Sin(m.dec) + Math.Cos(s.dec) * Math.Cos(m.dec) * Math.Cos(s.ra - m.ra));
inc = Math.Atan2(sdist * Math.Sin(phi), m.dist - sdist * Math.Cos(phi));
angle = Math.Atan2(Math.Cos(s.dec) * Math.Sin(s.ra - m.ra), Math.Sin(s.dec) * Math.Cos(m.dec) -
Math.Cos(s.dec) * Math.Sin(m.dec) * Math.Cos(s.ra - m.ra));
double startPhase = 0.5 + 0.5 * inc * (angle < 0 ? -1 : 1) / Math.PI;
nDate = new DateTime(dMon.Year, dMon.Month, x, 23, 59, 59, DateTimeKind.Utc);
d = toDays(nDate);
s = GetSunCoords(d);
m = GetMoonCoords(d, c);
phi = Math.Acos(Math.Sin(s.dec) * Math.Sin(m.dec) + Math.Cos(s.dec) * Math.Cos(m.dec) * Math.Cos(s.ra - m.ra));
inc = Math.Atan2(sdist * Math.Sin(phi), m.dist - sdist * Math.Cos(phi));
angle = Math.Atan2(Math.Cos(s.dec) * Math.Sin(s.ra - m.ra), Math.Sin(s.dec) * Math.Cos(m.dec) -
Math.Cos(s.dec) * Math.Sin(m.dec) * Math.Cos(s.ra - m.ra));
double endPhase = 0.5 + 0.5 * inc * (angle < 0 ? -1 : 1) / Math.PI;
//Determine Moon Name.
if (startPhase <= .5 && endPhase >= .5)
{
moonDate = x;
moonName = GetMoonName(dMon.Month, moonName);
}
//Get Moon Name (month, string);
//Get Moon Phase Name
if (date.Day == x)
{
if (startPhase > endPhase)
{
mi.PhaseName = "New Moon";
break;
}
if (startPhase <= .25 && endPhase >= .25)
{
mi.PhaseName = "First Quarter";
break;
}
if (startPhase <= .5 && endPhase >= .5)
{
mi.PhaseName = "Full Moon";
break;
}
if (startPhase <= .75 && endPhase >= .75)
{
mi.PhaseName = "Last Quarter";
break;
}
if (startPhase > 0 && startPhase < .25 && endPhase > 0 && endPhase < .25)
{
mi.PhaseName = "Waxing Crescent";
break;
}
if (startPhase > .25 && startPhase < .5 && endPhase > .25 && endPhase < .5)
{
mi.PhaseName = "Waxing Gibbous";
break;
}
if (startPhase > .5 && startPhase < .75 && endPhase > .5 && endPhase < .75)
{
mi.PhaseName = "Waning Gibbous";
break;
}
if (startPhase > .75 && startPhase < 1 && endPhase > .75 && endPhase < 1)
{
mi.PhaseName = "Waning Crescent";
break;
}
}
}
if (date.Day == moonDate)
{
c.AstrologicalSigns.MoonName = moonName;
}
else
{
c.AstrologicalSigns.MoonName = "";
}
CalculateLunarEclipse(date, lat, lng, c);
}
public static void GetMoonIllumination(DateTime date, Celestial c, double lat, double lng, EagerLoad el, double offset)
{
//Moon Illum must be done for both the Moon Name and Phase so either will trigger it to load
if (el.Extensions.Lunar_Cycle || el.Extensions.Zodiac)
{
date = new DateTime(date.Year, date.Month, date.Day, date.Hour, date.Minute, date.Second, DateTimeKind.Utc);
offset *= -1;
double julianOffset = offset * .04166667;
SolarCoordinates s = SunCalc.Get_Solar_Coordinates(date, offset);
double JDE = JulianConversions.GetJulian(date) + julianOffset; //Get julian
double T = (JDE - 2451545) / 36525; //Get dynamic time.
double[] LDMNF = Get_Moon_LDMNF(T);
LunarCoordinates m = GetMoonCoords(LDMNF, T, JDE);
double sdist = 149598000,
phi = Math.Acos(Math.Sin(s.declination.ToRadians()) * Math.Sin(m.declination.ToRadians()) + Math.Cos(s.declination.ToRadians()) * Math.Cos(m.declination.ToRadians()) * Math.Cos(s.rightAscension.ToRadians() - m.rightAscension.ToRadians())),
inc = Math.Atan2(sdist * Math.Sin(phi), 0 - sdist * Math.Cos(phi)),
angle = Math.Atan2(Math.Cos(s.declination.ToRadians()) * Math.Sin(s.rightAscension.ToRadians() - m.rightAscension.ToRadians()), Math.Sin(s.declination.ToRadians()) * Math.Cos(m.declination.ToRadians()) -
Math.Cos(s.declination.ToRadians()) * Math.Sin(m.declination.ToRadians()) * Math.Cos(s.rightAscension.ToRadians() - m.rightAscension.ToRadians()));
MoonIllum mi = new MoonIllum();
mi.Fraction = (1 + Math.Cos(inc)) / 2;
mi.Phase = 0.5 + 0.5 * inc * (angle < 0 ? -1 : 1) / Math.PI;
mi.Angle = angle;
c.moonIllum = mi;
string moonName = "";
int moonDate = 0;
//GET PHASE NAME
//CHECK MOON AT BEGINNING AT END OF DAY TO GET DAY PHASE
DateTime dMon = new DateTime(date.Year, date.Month, 1);
for (int x = 1; x <= date.Day; x++)
{
DateTime nDate = new DateTime(dMon.Year, dMon.Month, x, 0, 0, 0, DateTimeKind.Utc);
s = SunCalc.Get_Solar_Coordinates(date, offset);
JDE = JulianConversions.GetJulian(nDate) + julianOffset; //Get julian
T = (JDE - 2451545) / 36525; //Get dynamic time.
LDMNF = Get_Moon_LDMNF(T);
m = GetMoonCoords(LDMNF, T, JDE);
phi = Math.Acos(Math.Sin(s.declination.ToRadians()) * Math.Sin(m.declination.ToRadians()) + Math.Cos(s.declination.ToRadians()) * Math.Cos(m.declination.ToRadians()) * Math.Cos(s.rightAscension.ToRadians() - m.rightAscension.ToRadians()));
inc = Math.Atan2(sdist * Math.Sin(phi), 0 - sdist * Math.Cos(phi));
angle = Math.Atan2(Math.Cos(s.declination.ToRadians()) * Math.Sin(s.rightAscension.ToRadians() - m.rightAscension.ToRadians()), Math.Sin(s.declination.ToRadians()) * Math.Cos(m.declination.ToRadians()) -
Math.Cos(s.declination.ToRadians()) * Math.Sin(m.declination.ToRadians()) * Math.Cos(s.rightAscension.ToRadians() - m.rightAscension.ToRadians()));
double startPhase = 0.5 + 0.5 * inc * (angle < 0 ? -1 : 1) / Math.PI;
nDate = new DateTime(dMon.Year, dMon.Month, x, 23, 59, 59, DateTimeKind.Utc);
s = SunCalc.Get_Solar_Coordinates(date, offset);
JDE = JulianConversions.GetJulian(nDate) + julianOffset; //Get julian
T = (JDE - 2451545) / 36525; //Get dynamic time.
LDMNF = Get_Moon_LDMNF(T);
m = GetMoonCoords(LDMNF, T, JDE);
phi = Math.Acos(Math.Sin(s.declination.ToRadians()) * Math.Sin(m.declination.ToRadians()) + Math.Cos(s.declination.ToRadians()) * Math.Cos(m.declination.ToRadians()) * Math.Cos(s.rightAscension.ToRadians() - m.rightAscension.ToRadians()));
inc = Math.Atan2(sdist * Math.Sin(phi), 0 - sdist * Math.Cos(phi));
angle = Math.Atan2(Math.Cos(s.declination.ToRadians()) * Math.Sin(s.rightAscension.ToRadians() - m.rightAscension.ToRadians()), Math.Sin(s.declination.ToRadians()) * Math.Cos(m.declination.ToRadians()) -
Math.Cos(s.declination.ToRadians()) * Math.Sin(m.declination.ToRadians()) * Math.Cos(s.rightAscension.ToRadians() - m.rightAscension.ToRadians()));
double endPhase = 0.5 + 0.5 * inc * (angle < 0 ? -1 : 1) / Math.PI;
//Determine Moon Name.
if (startPhase <= .5 && endPhase >= .5)
{
moonDate = x;
moonName = GetMoonName(dMon.Month, moonName);
}
//Get Moon Name (month, string);
//Get Moon Phase Name
if (date.Day == x)
{
if (startPhase > endPhase)
{
mi.PhaseName = "New Moon";
break;
}
if (startPhase <= .25 && endPhase >= .25)
{
mi.PhaseName = "First Quarter";
break;
}
if (startPhase <= .5 && endPhase >= .5)
{
mi.PhaseName = "Full Moon";
break;
}
if (startPhase <= .75 && endPhase >= .75)
{
mi.PhaseName = "Last Quarter";
break;
}
if (startPhase > 0 && startPhase < .25 && endPhase > 0 && endPhase < .25)
{
mi.PhaseName = "Waxing Crescent";
break;
}
if (startPhase > .25 && startPhase < .5 && endPhase > .25 && endPhase < .5)
{
mi.PhaseName = "Waxing Gibbous";
break;
}
if (startPhase > .5 && startPhase < .75 && endPhase > .5 && endPhase < .75)
{
mi.PhaseName = "Waning Gibbous";
break;
}
if (startPhase > .75 && startPhase < 1 && endPhase > .75 && endPhase < 1)
{
mi.PhaseName = "Waning Crescent";
break;
}
}
}
if (date.Day == moonDate)
{
if (el.Extensions.Zodiac)
{
c.AstrologicalSigns.moonName = moonName;
}
}
else
{
if (el.Extensions.Zodiac)
{
c.AstrologicalSigns.moonName = "";
}
}
}
if (el.Extensions.Lunar_Eclipse)
{
CalculateLunarEclipse(date, lat, lng, c);
}
}
