Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2015 05 28 17 00 00      1.16606   31.01385   58.98615  117.87070
2015 05 28 18 00 00      1.07918   22.15196   67.84804  142.40490
2015 05 28 19 00 00      1.05406   18.50432   71.49568  181.99618
2015 05 28 20 00 00      1.08421   22.79738   67.20262  220.44742
2015 05 28 21 00 00      1.17744   31.92484   58.07516  243.81640
2015 05 28 22 00 00      1.36121   42.78682   47.21318  258.38367
2015 05 28 23 00 00      1.70564   54.18505   35.81495  269.16854
2015 05 29 00 00 00      2.41148   65.61941   24.38059  278.40773
2015 05 29 01 00 00      4.29680   76.77655   13.22345  287.21973
2015 05 29 02 00 00     16.00891   87.23870    2.76130  296.31120
2015 05 29 03 00 00     -1.00000   97.31420   -7.31420  306.24056
2015 05 29 04 00 00     -1.00000  105.86865  -15.86865  317.49436
2015 05 29 05 00 00     -1.00000  112.63256  -22.63256  330.42302
2015 05 29 06 00 00     -1.00000  116.99292  -26.99292  345.02643
2015 05 29 07 00 00     -1.00000  118.41852  -28.41852    0.70319
2015 05 29 08 00 00     -1.00000  116.70539  -26.70539   16.32202
2015 05 29 09 00 00     -1.00000  112.09662  -22.09662   30.78273
2015 05 29 10 00 00     -1.00000  105.14112  -15.14112   43.54449
2015 05 29 11 00 00     -1.00000   96.44901   -6.44901   54.65128
2015 05 29 12 00 00     13.12219   86.32864    3.67136   64.47228
2015 05 29 13 00 00      4.00519   75.75817   14.24183   73.49994
2015 05 29 14 00 00      2.31826   64.55958   25.44042   82.29903
2015 05 29 15 00 00      1.66284   53.10829   36.89171   91.59570
2015 05 29 16 00 00      1.33848   41.72178   48.27822  102.56559
2015 05 29 17 00 00      1.16502   30.92838   59.07162  117.60888


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.