Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2014 08 21 07 00 00     -1.00000  127.88257  -37.88257  359.00733
2014 08 21 08 00 00     -1.00000  126.25777  -36.25777   17.30650
2014 08 21 09 00 00     -1.00000  121.28436  -31.28436   33.93688
2014 08 21 10 00 00     -1.00000  113.73885  -23.73885   48.14637
2014 08 21 11 00 00     -1.00000  104.43197  -14.43197   60.16533
2014 08 21 12 00 00     -1.00000   93.99855   -3.99855   70.62920
2014 08 21 13 00 00      7.51497   82.77619    7.22381   80.23711
2014 08 21 14 00 00      3.11266   71.42164   18.57836   89.69419
2014 08 21 15 00 00      1.99490   60.01020   29.98980   99.81184
2014 08 21 16 00 00      1.52141   48.97702   41.02298  111.73245
2014 08 21 17 00 00      1.28532   38.98226   51.01774  127.30169
2014 08 21 18 00 00      1.16955   31.29731   58.70269  149.21849
2014 08 21 19 00 00      1.13249   28.05443   61.94557  178.39788
2014 08 21 20 00 00      1.16278   30.74343   59.25657  208.06150
2014 08 21 21 00 00      1.26969   38.10021   51.89979  230.73558
2014 08 21 22 00 00      1.49089   47.94479   42.05521  246.79715
2014 08 21 23 00 00      1.93210   58.92181   31.07819  258.97250
2014 08 22 00 00 00      2.94922   70.33092   19.66908  269.19836
2014 08 22 01 00 00      6.65420   81.73158    8.26842  278.66762
2014 08 22 02 00 00     -1.00000   93.01232   -3.01232  288.21245
2014 08 22 03 00 00     -1.00000  103.56449  -13.56449  298.54399
2014 08 22 04 00 00     -1.00000  113.05227  -23.05227  310.36662
2014 08 22 05 00 00     -1.00000  120.86027  -30.86027  324.34379
2014 08 22 06 00 00     -1.00000  126.18522  -36.18522  340.78952
2014 08 22 07 00 00     -1.00000  128.21767  -38.21767  359.07940


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.