Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2014 08 28 01 00 00      8.06450   83.33001    6.66999  277.31802
2014 08 28 02 00 00     -1.00000   94.69245   -4.69245  286.94398
2014 08 28 03 00 00     -1.00000  105.33941  -15.33941  297.37674
2014 08 28 04 00 00     -1.00000  114.94893  -24.94893  309.36700
2014 08 28 05 00 00     -1.00000  122.88228  -32.88228  323.65124
2014 08 28 06 00 00     -1.00000  128.28702  -38.28702  340.61133
2014 08 28 07 00 00     -1.00000  130.28936  -40.28936  359.57807
2014 08 28 08 00 00     -1.00000  128.47831  -38.47831   18.60373
2014 08 28 09 00 00     -1.00000  123.22880  -33.22880   35.69778
2014 08 28 10 00 00     -1.00000  115.40491  -25.40491   50.12165
2014 08 28 11 00 00     -1.00000  105.86807  -15.86807   62.22299
2014 08 28 12 00 00     -1.00000   95.26898   -5.26898   72.73312
2014 08 28 13 00 00      8.75007   83.92708    6.07292   82.40616
2014 08 28 14 00 00      3.30477   72.55978   17.44022   91.97761
2014 08 28 15 00 00      2.06920   61.19918   28.80082  102.27511
2014 08 28 16 00 00      1.56371   50.31733   39.68267  114.43099
2014 08 28 17 00 00      1.31599   40.60854   49.39146  130.17679
2014 08 28 18 00 00      1.19620   33.34218   56.65782  151.76557
2014 08 28 19 00 00      1.15938   30.45880   59.54120  179.43692
2014 08 28 20 00 00      1.19376   33.16332   56.83668  207.24431
2014 08 28 21 00 00      1.31036   40.31936   49.68064  229.05942
2014 08 28 22 00 00      1.55268   49.97748   40.02252  244.96067
2014 08 28 23 00 00      2.04632   60.84364   29.15636  257.19716
2014 08 29 00 00 00      3.24326   72.21066   17.78934  267.52464
2014 08 29 01 00 00      8.36867   83.60646    6.39354  277.09056


Latitude:
-90.0 to +90.0, Negative for South, Positive for North.

Longitude:
-180.0 to +180.0, Negative for East, Positive for West.

Start Date:
Enter start date in the format yyyy-MM-dd HH:mm [UTC]

End Date:
Enter end date in the format yyyy-MM-dd HH:mm [UTC]

Interval:
The internal (in seconds) between successive solar calculations.

Date Format:
Examples:
yyyy/MM-dd_DDD hh:mm:ss aa
yyyyMMdd[DDD]HHmmss
Air mass
If the sun is below the horizon, Air mass = -1.0000. Toggle the checkbox to enable/disable column in report.

Air mass Calculation
Airmass = 1.0/(cos(90 - elev) + 0.50572 * (6.07995 + elev)-1.6364)

Solar Zenith Angle
Solar elevation in Degrees from zenith (90°). Angles are corrected for atmospheric diffraction. Toggle the checkbox to enable/disable column in report.

Elevation:
Solar elevation in Degrees above horizon (0 degrees). Angles are corrected for atmospheric diffraction. Toggle the checkbox to enable/disable column in report.

Azimuth:
Sun azimuth, 0° = N, 90° = E, 180° = S, 270° = W. Toggle the checkbox to enable/disable column in report.