Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2017 04 24 05 00 00     -1.00000  120.38579  -30.38579  326.14718
2017 04 24 06 00 00     -1.00000  125.36466  -35.36466  342.54180
2017 04 24 07 00 00     -1.00000  127.04693  -37.04693    0.56609
2017 04 24 08 00 00     -1.00000  125.11872  -35.11872   18.52339
2017 04 24 09 00 00     -1.00000  119.93637  -29.93637   34.76173
2017 04 24 10 00 00     -1.00000  112.26908  -22.26908   48.64309
2017 04 24 11 00 00     -1.00000  102.89756  -12.89756   60.42701
2017 04 24 12 00 00     -1.00000   92.43025   -2.43025   70.73325
2017 04 24 13 00 00      6.29121   81.20786    8.79214   80.24033
2017 04 24 14 00 00      2.87883   69.82085   20.17915   89.64370
2017 04 24 15 00 00      1.90305   58.38970   31.61030   99.76505
2017 04 24 16 00 00      1.47375   47.33849   42.66151  111.79782
2017 04 24 17 00 00      1.25687   37.34652   52.65348  127.73359
2017 04 24 18 00 00      1.15128   29.76486   60.23514  150.55279
2017 04 24 19 00 00      1.12052   26.88023   63.11977  181.04582
2017 04 24 20 00 00      1.15534   30.11545   59.88455  211.20780
2017 04 24 21 00 00      1.26619   37.89727   52.10273  233.52874
2017 04 24 22 00 00      1.49178   47.97559   42.02441  249.15379
2017 04 24 23 00 00      1.93950   59.05440   30.94560  261.03156
2017 04 25 00 00 00      2.97036   70.47907   19.52093  271.09096
2017 04 25 01 00 00      6.72678   81.82968    8.17032  280.49248
2017 04 25 02 00 00     -1.00000   93.00277   -3.00277  290.04414
2017 04 25 03 00 00     -1.00000  103.38227  -13.38227  300.43632
2017 04 25 04 00 00     -1.00000  112.62459  -22.62459  312.34137
2017 04 25 05 00 00     -1.00000  120.11027  -30.11027  326.35685


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.