# | Line 103 | Line 103 | double solar_sunrise(int month, int day); | |
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103 | double stadj(); | |
104 | int jdate(int month, int day); | |
105 | ||
106 | – | |
107 | – | /* sun calculation constants */ |
108 | – | extern double s_latitude; |
109 | – | extern double s_longitude; |
110 | – | extern double s_meridian; |
111 | – | |
106 | const double AU = 149597890E3; | |
107 | const double solar_constant_e = 1367; /* solar constant W/m^2 */ | |
108 | const double solar_constant_l = 127500; /* solar constant lux */ |
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