Python: SunMoonTimeCalculator

 

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# encoding: utf-8 # 版权所有 2024 ©涂聚文有限公司 # 许可信息查看： # 描述： https://github.com/Broham/suncalcPy # Author    : geovindu,Geovin Du 涂聚文. # IDE       : PyCharm 2023.1 python 3.11 # Datetime  : 2024/5/14 21:59 # User      : geovindu # Product   : PyCharm # Project   : EssentialAlgorithms # File      : sunCalc.py # explain   : 学习   import math from datetime import datetime, timedelta import time import calendar   class SunMoonTimeCalculator(object):     """     日出日落，月升月落计算类       """         def __init__(self):         """           """         self.PI = 3.141592653589793  # math.pi         """         派         """         self.sin = math.sin         """         sin 函数         """         self.cos = math.cos         """         函数         """         self.tan = math.tan         """         函数         """         self.asin = math.asin         """         函数         """         self.atan = math.atan2         """         函数         """         self.acos = math.acos         """         函数         """         self.rad = self.PI / 180.0         self.e = self.rad * 23.4397  # obliquity of the Earth           self.dayMs = 1000 * 60 * 60 * 24         self.J1970 = 2440588         self.J2000 = 2451545         self.J0 = 0.0009           self.times = [             [-0.833, 'sunrise', 'sunset'],             [-0.3, 'sunriseEnd', 'sunsetStart'],             [-6, 'dawn', 'dusk'],             [-12, 'nauticalDawn', 'nauticalDusk'],             [-18, 'nightEnd', 'night'],             [6, 'goldenHourEnd', 'goldenHour']         ]         def rightAscension(self,l, b):         """           :param l:         :param b:         :return:         """         return self.atan(self.sin(l) * self.cos(self.e) - self.tan(b) * self.sin(self.e), self.cos(l))         def declination(self,l, b):         """           :param l:         :param b:         :return:         """         return self.asin(self.sin(b) * self.cos(self.e) + self.cos(b) * self.sin(self.e) * self.sin(l))         def azimuth(self,H, phi, dec):         """           :param H:         :param phi:         :param dec:         :return:         """         return self.atan(self.sin(H), self.cos(H) * self.sin(phi) - self.tan(dec) * self.cos(phi))         def altitude(self,H, phi, dec):         """           :param H:         :param phi:         :param dec:         :return:         """         return self.asin(self.sin(phi) * self.sin(dec) + self.cos(phi) * self.cos(dec) * self.cos(H))         def siderealTime(self,d, lw):         """           :param d:         :param lw:         :return:         """         return self.rad * (280.16 + 360.9856235 * d) - lw         def toJulian(self,date):         """           :param date:         :return:         """         return (time.mktime(date.timetuple()) * 1000) / self.dayMs - 0.5 + self.J1970         def fromJulian(self,j):         """           :param j:         :return:         """         return datetime.fromtimestamp(((j + 0.5 - self.J1970) * self.dayMs) / 1000.0)         def toDays(self,date):         """           :param date:         :return:         """         return self.toJulian(date) - self.J2000         def julianCycle(self,d, lw):         """           :param d:         :param lw:         :return:         """         return round(d - self.J0 - lw / (2 * self.PI))         def approxTransit(self,Ht, lw, n):         """           :param Ht:         :param lw:         :param n:         :return:         """         return self.J0 + (Ht + lw) / (2 * self.PI) + n         def solarTransitJ(self,ds, M, L):         """           :param ds:         :param M:         :param L:         :return:         """         return self.J2000 + ds + 0.0053 * self.sin(M) - 0.0069 * self.sin(2 * L)         def hourAngle(self,h, phi, d):         """           :param h:         :param phi:         :param d:         :return:         """         try:             ret = self.acos((self.sin(h) - self.sin(phi) * self.sin(d)) / (self.cos(phi) * self.cos(d)))             return ret         except ValueError as e:             print(h, phi, d, "=>", e)         def observerAngle(self,height):         """           :param height:         :return:         """         return -2.076 * math.sqrt(height) / 60         def solarMeanAnomaly(self,d):         """           :param d:         :return:         """         return self.rad * (357.5291 + 0.98560028 * d)         def eclipticLongitude(self,M):         """           :param M:         :return:         """         C = self.rad * (1.9148 * self.sin(M) + 0.02 * self.sin(2 * M) + 0.0003 * self.sin(3 * M))  # equation of center         P = self.rad * 102.9372  # perihelion of the Earth         return M + C + P + self.PI         def sunCoords(self,d):         """           :param d:         :return:         """         M = self.solarMeanAnomaly(d)         L = self.eclipticLongitude(M)         return dict(             dec=self.declination(L, 0),             ra=self.rightAscension(L, 0)         )         def getSetJ(self,h, lw, phi, dec, n, M, L):         """           :param h:         :param lw:         :param phi:         :param dec:         :param n:         :param M:         :param L:         :return:         """         w = self.hourAngle(h, phi, dec)         a = self.approxTransit(w, lw, n)         return self.solarTransitJ(a, M, L)           def moonCoords(self,d):         """         geocentric ecliptic coordinates of the moon         :param d:         :return:         """         L = self.rad * (218.316 + 13.176396 * d)         M = self.rad * (134.963 + 13.064993 * d)         F = self.rad * (93.272 + 13.229350 * d)           l = L + self.rad * 6.289 * self.sin(M)         b = self.rad * 5.128 * self.sin(F)         dt = 385001 - 20905 * self.cos(M)           return dict(             ra=self.rightAscension(l, b),             dec=self.declination(l, b),             dist=dt         )         def getMoonIllumination(self,date):         """         Gets illumination properties of the moon for the given time.         :param date:         :return:         """         d = self.toDays(date)         s = self.sunCoords(d)         m = self.moonCoords(d)           # distance from Earth to Sun in km         sdist = 149598000         phi = self.acos(self.sin(s["dec"]) * self.sin(m["dec"]) + self.cos(s["dec"]) * self.cos(m["dec"]) * self.cos(s["ra"] - m["ra"]))         inc = self.atan(sdist * self.sin(phi), m["dist"] - sdist * self.cos(phi))         angle = self.atan(self.cos(s["dec"]) * self.sin(s["ra"] - m["ra"]),                      self.sin(s["dec"]) * self.cos(m["dec"]) - self.cos(s["dec"]) * self.sin(m["dec"]) * self.cos(s["ra"] - m["ra"]))           return dict(             fraction=(1 + self.cos(inc)) / 2,             phase=0.5 + 0.5 * inc * (-1 if angle < 0 else 1) / self.PI,             angle=angle         )         def getSunrise(self,date, lat, lng):         """           :param lat:         :param lng:         :return:         """         ret = self.getTimes(date, lat, lng)         return ret["sunrise"]         def getTimes(self,date, lat, lng, height=0):         """         Gets sun rise/set properties for the given time, location and height.         :param date:         :param lat:         :param lng:         :param height:         :return:         """         lw = self.rad * -lng         phi = self.rad * lat           dh = self.observerAngle(height)           d = self.toDays(date)         n = self.julianCycle(d, lw)         ds = self.approxTransit(0, lw, n)           M = self.solarMeanAnomaly(ds)         L = self.eclipticLongitude(M)         dec = self.declination(L, 0)           Jnoon = self.solarTransitJ(ds, M, L)           result = dict(             solarNoon=self.fromJulian(Jnoon).strftime('%Y-%m-%d %H:%M:%S'),             nadir=self.fromJulian(Jnoon - 0.5).strftime('%Y-%m-%d %H:%M:%S')         )           for i in range(0, len(self.times)):             time = self.times[i]             h0 = (time[0] + dh) * self.rad               Jset = self.getSetJ(h0, lw, phi, dec, n, M, L)             Jrise = Jnoon - (Jset - Jnoon)             result[time[1]] = self.fromJulian(Jrise).strftime('%Y-%m-%d %H:%M:%S')             result[time[2]] = self.fromJulian(Jset).strftime('%Y-%m-%d %H:%M:%S')           return result         def hoursLater(self,date, h):         """           :param date:         :param h:         :return:         """         return date + timedelta(hours=h)         def getMoonTimes(self,date, lat, lng):         """           :param date:         :param lat:         :param lng:         :return:         """         """Gets moon rise/set properties for the given time and location."""           t = date.replace(hour=0, minute=0, second=0)           hc = 0.133 * self.rad         h0 = self.getMoonPosition(t, lat, lng)["altitude"] - hc         rise = 0         sett = 0           # go in 2-hour chunks, each time seeing if a 3-point quadratic curve crosses zero (which means rise or set)         for i in range(1, 25, 2):             h1 = self.getMoonPosition(self.hoursLater(t, i), lat, lng)["altitude"] - hc             h2 = self.getMoonPosition(self.hoursLater(t, i + 1), lat, lng)["altitude"] - hc               a = (h0 + h2) / 2 - h1             b = (h2 - h0) / 2             xe = -b / (2 * a)             ye = (a * xe + b) * xe + h1             d = b * b - 4 * a * h1             roots = 0               if d >= 0:                 dx = math.sqrt(d) / (abs(a) * 2)                 x1 = xe - dx                 x2 = xe + dx                 if abs(x1) <= 1:                     roots += 1                 if abs(x2) <= 1:                     roots += 1                 if x1 < -1:                     x1 = x2               if roots == 1:                 if h0 < 0:                     rise = i + x1                 else:                     sett = i + x1               elif roots == 2:                 rise = i + (x2 if ye < 0 else x1)                 sett = i + (x1 if ye < 0 else x2)               if (rise and sett):                 break               h0 = h2           result = dict()           if (rise):             result["rise"] = self.hoursLater(t, rise)         if (sett):             result["set"] = self.hoursLater(t, sett)           if (not rise and not sett):             value = 'alwaysUp' if ye > 0 else 'alwaysDown'             result[value] = True           return result         def getMoonPosition(self,date, lat, lng):         """         Gets positional attributes of the moon for the given time and location.         :param date:         :param lat:         :param lng:         :return:         """           lw = self.rad * -lng         phi = self.rad * lat         d = self.toDays(date)           c = self.moonCoords(d)         H = self.siderealTime(d, lw) - c["ra"]         h = self.altitude(H, phi, c["dec"])           # altitude correction for refraction         h = h + self.rad * 0.017 / self.tan(h + self.rad * 10.26 / (h + self.rad * 5.10))         pa = self.atan(self.sin(H), self.tan(phi) * self.cos(c["dec"]) - self.sin(c["dec"]) * self.cos(H))           return dict(             azimuth=self.azimuth(H, phi, c["dec"]),             altitude=h,             distance=c["dist"],             parallacticAngle=pa         )         def getPosition(self,date, lat, lng):         """         Returns positional attributes of the sun for the given time and location.         :param date:         :param lat:         :param lng:         :return:         """         lw = self.rad * -lng         phi = self.rad * lat         d = self.toDays(date)           c = self.sunCoords(d)         H = self.siderealTime(d, lw) - c["ra"]         # print("d", d, "c",c,"H",H,"phi", phi)         return dict(             azimuth=self.azimuth(H, phi, c["dec"]),             altitude=self.altitude(H, phi, c["dec"])         )

　　

调用：

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#日出日落 深圳 sun=Common.sunCalc.SunMoonTimeCalculator() lat= 22.5445741 lng= 114.0545429 print(sun.getTimes(datetime.now(),  lat, lng)) print(sun.getMoonIllumination(datetime.now())) #月升月落 print(sun.getMoonTimes(datetime.now(), lat, lng))

　　

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