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- Function getjq(yy, mm, Optional gs As Integer = 0)
- jqmc = "小寒大寒立春雨水惊蛰春分清明谷雨立夏小满芒种夏至小暑大暑立秋处暑白露秋分寒露霜降立冬小雪大雪冬至"
- v0 = 628.3319653318
- t = 0 '第1步迭代
- L0 = (48650621.66 + 6283319653.318 * t) / 10 ^ 7
- W = (mm - 5 + (yy - 1999) * 24) * 15 * 3.1415926 / 180 'W指的是太阳黄经。1999年春分对应W=0,
- '以后每W每增加15度对应下一个节气。
- t = t + (W - L0) / v0 '第2步迭代
- t2 = t * t
- l1 = (48950621.66 + 6283319653.318 * t + 53 * t2 _
- + 334116 * Cos(4.67 + 628.307585 * t) + 2061 * Cos(2.678 + 628.3076 * t) * t) / 10 ^ 7
- v1 = 628.332 + 21 * Sin(1.527 + 628.307585 * t)
- t = t + (W - l1) / v1 '第3步迭代
- t2 = t * t
- t3 = t2 * t
- t4 = t3 * t
-
- L2 = (48950621.66 + 6283319653.318 * t + 52.9674 * t2 + 0.00432 * t3 - 0.001124 * t4 _
- + 334166 * Cos(4.669257 + 628.307585 * t) + 3489 * Cos(4.6261 + 1256.61517 * t) _
- + 350 * Cos(2.744 + 575.3385 * t) + 342 * Cos(2.829 + 0.3523 * t) _
- + 314 * Cos(3.628 + 7771.3771 * t) + 268 * Cos(4.418 + 786.0419 * t) _
- + 234 * Cos(6.135 + 393.021 * t) + 132 * Cos(0.742 + 1150.677 * t) _
- + 127 * Cos(2.037 + 52.9691 * t) + 120 * Cos(1.11 + 157.7344 * t) _
- + 99 * Cos(5.23 + 588.493 * t) + 90 * Cos(2.05 + 2.63 * t) _
- + 86 * Cos(3.51 + 39.815 * t) + 78 * Cos(1.18 + 522.369 * t) _
- + 75 * Cos(2.53 + 550.755 * t) + 51 * Cos(4.58 + 1884.923 * t) _
- + 49 * Cos(4.21 + 77.552 * t) + 36 * Cos(2.92 + 0.07 * t) _
- + 32 * Cos(5.85 + 1179.063 * t) + 28 * Cos(1.9 + 79.63 * t) _
- + 27 * Cos(0.31 + 1097.71 * t) + 2060.6 * Cos(2.67823 + 628.307585 * t) * t _
- + 43 * Cos(2.635 + 1256.6152 * t) * t + 8.72 * Cos(1.072 + 628.3076 * t) * t2 _
- - 994 - 834 * Sin(2.1824 - 33.75705 * t) _
- - 64 * Sin(3.5069 + 1256.66393 * t)) / 10 ^ 7
-
- t = t + (W - L2) / v1 '第4步迭代
- J2000 = 2451545
- ' JD = J2000 + t * 36525 - (64.7 + (yy - 2005) * 0.4) / 86400 + 8 / 24 '地球自转修正项 需完善
- JD = J2000 + t * 36525 - deltaT(yy) / 86400 + 8 / 24 '地球自转修正项 已完善
- Z = Int(JD + 0.5) '转换日期
- F = JD + 0.5 - Z
-
- a0 = Int((Z - 1867216.25) / 36524.25)
- A = Z + 1 + a0 - Int(a0 / 4): If Z < 2299161 Then A = Z
- B = A + 1524
- C = Int((B - 122.1) / 365.25)
- D = Int(365.25 * C)
- E = Int((B - D) / 30.6001)
- ' d1 = B - d - Int(30.6001 * E) + F
- If yy = 1923 Then tm = 1.5 / 4320 '此代码用于修正1923-02-20 的误差。已经校正1900-2100年的误差
- d1 = B - D - Int(30.6001 * E) + F - tm
- m1 = E - 13: If E < 14 Then m1 = E - 1
- y1 = C - 4715: If m1 > 2 Then y1 = C - 4716
- d2 = (d1 - Int(d1)) * 86400
- hh1 = Int(d2 / 3600)
- mm1 = Int(((d2 - hh1 * 3600) / 60))
- mm2 = ((d2 - hh1 * 3600) / 60)
- ss1 = Round((mm2 - mm1) * 60, 2)
-
- getjq1 = y1 & Format(m1, "\-00\-") & Format(Int(d1), "00")
- getjq = getjq1 & Format(hh1, " 00") & Format(mm1, "\:00") & Format(ss1, "\:00.00 ")
-
- If gs = 1 Then getjq = getjq & Mid(jqmc, (mm Mod 24) * 2 + 1, 2)
- If gs = 2 Then getjq = Mid(jqmc, (mm Mod 24) * 2 + 1, 2)
- If gs = 3 Then getjq = getjq1
- If gs = 4 Then getjq = DateSerial(y1, m1, Int(d1)) + d2 / 86400
- ' Debug.Print getjq
- End Function
- Public Function deltaT(year)
- If year >= 2005 And year < 2014 Then
- deltaT = 64.7 + (year - 2005) * 0.4
- ElseIf year >= 2014 And year < 2114 Then
- deltaT = -20 + 31 * ((year - 1820) / 100) ^ 2 _
- + (year - 2114) * ((-20 + 31 * ((2014 - 1820) / 100) ^ 2) _
- - (64.7 + (2014 - 2005) * 0.4)) / 100
- ElseIf year > 2114 Then
- deltaT = -20 + 31 * ((year - 1820) / 100) ^ 2
- ElseIf year >= -4000 And year < -500 Then
- y1 = -4000: y2 = -500
- t = (year - y1) / (y2 - y1) * 10
- A = 108371.7: B = -13036.8: C = 392: D = 0
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= -500 And year < -150 Then
- y1 = -500: y2 = -150
- t = (year - y1) / (y2 - y1) * 10
- A = 17201: B = -627.82: C = 16.17: D = -0.3413
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= -150 And year < 150 Then
- y1 = -150: y2 = 150
- t = (year - y1) / (y2 - y1) * 10
- A = 12200.6: B = -346.41: C = 5.403: D = -0.1593
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 150 And year < 500 Then
- y1 = 150: y2 = 500
- t = (year - y1) / (y2 - y1) * 10
- A = 9113.8: B = -328.13: C = -1.647: D = 0.0377
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 500 And year < 900 Then
- y1 = 500: y2 = 900
- t = (year - y1) / (y2 - y1) * 10
- A = 5707.5: B = -391.41: C = 0.915: D = 0.3145
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 900 And year < 1300 Then
- y1 = 900: y2 = 1300
- t = (year - y1) / (y2 - y1) * 10
- A = 2203.4: B = -283.45: C = 13.034: D = -0.1778
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1300 And year < 1600 Then
- y1 = 1300: y2 = 1600
- t = (year - y1) / (y2 - y1) * 10
- A = 490.1: B = -57.35: C = 2.085: D = -0.0072
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1600 And year < 1700 Then
- y1 = 1600: y2 = 1700
- t = (year - y1) / (y2 - y1) * 10
- A = 120: B = -9.81: C = -1.532: D = 0.1403
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1700 And year < 1800 Then
- y1 = 1700: y2 = 1800
- t = (year - y1) / (y2 - y1) * 10
- A = 10.2: B = -0.91: C = 0.51: D = -0.037
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1800 And year < 1830 Then
- y1 = 1800: y2 = 1830
- t = (year - y1) / (y2 - y1) * 10
- A = 13.4: B = -0.72: C = 0.202: D = -0.0193
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1830 And year < 1860 Then
- y1 = 1830: y2 = 1860
- t = (year - y1) / (y2 - y1) * 10
- A = 7.8: B = -1.81: C = 0.416: D = -0.247
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1860 And year < 1880 Then
- y1 = 1860: y2 = 1880
- t = (year - y1) / (y2 - y1) * 10
- A = 8.3: B = -0.13: C = -0.406: D = 0.0292
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1880 And year < 1900 Then
- y1 = 1880: y2 = 1900
- t = (year - y1) / (y2 - y1) * 10
- A = -5.4: B = 0.32: C = -0.183: D = 0.0173
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1900 And year < 1920 Then
- y1 = 1900: y2 = 1920
- t = (year - y1) / (y2 - y1) * 10
- A = -2.3: B = 2.06: C = 0.169: D = -0.0135
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1920 And year < 1940 Then
- y1 = 1920: y2 = 1940
- t = (year - y1) / (y2 - y1) * 10
- A = 21.2: B = 1.69: C = -0.304: D = 0.0167
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1940 And year < 1960 Then
- y1 = 1940: y2 = 1960
- t = (year - y1) / (y2 - y1) * 10
- A = 24.2: B = 1.22: C = -0.064: D = 0.0031
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1960 And year < 1980 Then
- y1 = 1960: y2 = 1980
- t = (year - y1) / (y2 - y1) * 10
- A = 33.2: B = 0.51: C = 0.231: D = -0.0109
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 1980 And year < 2000 Then
- y1 = 1980: y2 = 2000
- t = (year - y1) / (y2 - y1) * 10
- A = 51: B = 1.29: C = -0.026: D = 0.0032
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- ElseIf year >= 2000 And year < 2005 Then
- y1 = 2000: y2 = 2005
- t = (year - y1) / (y2 - y1) * 10
- A = 63.87: B = 0.1: C = 0: D = 0
- deltaT = A + B * t + C * t ^ 2 + D * t ^ 3
- Else
- deltaT = 108372
- End If
- End Function
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