Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2015 04 17 15 00 00      2.01297   60.30865   29.69135  101.76942
2015 04 17 16 00 00      1.53365   49.37539   40.62461  113.91547
2015 04 17 17 00 00      1.29658   39.59487   50.40513  129.76307
2015 04 17 18 00 00      1.18185   32.26695   57.73305  151.75366
2015 04 17 19 00 00      1.14743   29.42636   60.57364  180.21170
2015 04 17 20 00 00      1.18250   32.31697   57.68303  208.62823
2015 04 17 21 00 00      1.29804   39.67295   50.32705  230.55278
2015 04 17 22 00 00      1.53636   49.46216   40.53784  246.35892
2015 04 17 23 00 00      2.01806   60.39170   29.60830  258.48797
2015 04 18 00 00 00      3.16903   71.77050   18.22950  268.74314
2015 04 18 01 00 00      7.86955   83.14206    6.85794  278.27482
2015 04 18 02 00 00     -1.00000   94.43986   -4.43986  287.90946
2015 04 18 03 00 00     -1.00000  104.99068  -14.99068  298.37075
2015 04 18 04 00 00     -1.00000  114.46519  -24.46519  310.38884
2015 04 18 05 00 00     -1.00000  122.22468  -32.22468  324.65703
2015 04 18 06 00 00     -1.00000  127.43329  -37.43329  341.48834
2015 04 18 07 00 00     -1.00000  129.25984  -39.25984    0.17030
2015 04 18 08 00 00     -1.00000  127.33926  -37.33926   18.82391
2015 04 18 09 00 00     -1.00000  122.05341  -32.05341   35.58957
2015 04 18 10 00 00     -1.00000  114.23810  -24.23810   49.78681
2015 04 18 11 00 00     -1.00000  104.72493  -14.72493   61.74486
2015 04 18 12 00 00     -1.00000   94.14655   -4.14655   72.15936
2015 04 18 13 00 00      7.56745   82.83242    7.16758   81.75820
2015 04 18 14 00 00      3.11528   71.43813   18.56187   91.26330
2015 04 18 15 00 00      1.99671   60.04035   29.95965  101.50274


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.