Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2014 09 21 20 00 00      1.35143   42.33561   47.66439  205.34046
2014 09 21 21 00 00      1.52012   48.93471   41.06529  224.26268
2014 09 21 22 00 00      1.88114   57.97537   32.02463  239.21163
2014 09 21 23 00 00      2.70109   68.40688   21.59312  251.30825
2014 09 22 00 00 00      5.35704   79.54037   10.45963  261.74016
2014 09 22 01 00 00     -1.00000   91.09437   -1.09437  271.45977
2014 09 22 02 00 00     -1.00000  102.51444  -12.51444  281.27637
2014 09 22 03 00 00     -1.00000  113.52782  -23.52782  292.01384
2014 09 22 04 00 00     -1.00000  123.65518  -33.65518  304.65804
2014 09 22 05 00 00     -1.00000  132.15414  -42.15414  320.38742
2014 09 22 06 00 00     -1.00000  137.90511  -47.90511  340.07691
2014 09 22 07 00 00     -1.00000  139.64930  -49.64930    2.77871
2014 09 22 08 00 00     -1.00000  136.88239  -46.88239   25.01935
2014 09 22 09 00 00     -1.00000  130.37660  -40.37660   43.77529
2014 09 22 10 00 00     -1.00000  121.41806  -31.41806   58.68624
2014 09 22 11 00 00     -1.00000  111.03886  -21.03886   70.79702
2014 09 22 12 00 00     -1.00000   99.90718   -9.90718   81.25608
2014 09 22 13 00 00     20.12518   88.12620    1.87380   91.00203
2014 09 22 14 00 00      4.36277   76.98785   13.01215  100.84208
2014 09 22 15 00 00      2.44743   66.00455   23.99545  111.60504
2014 09 22 16 00 00      1.77882   55.87690   34.12310  124.29051
2014 09 22 17 00 00      1.47454   47.36685   42.63315  140.10459
2014 09 22 18 00 00      1.33623   41.61325   48.38675  159.95528
2014 09 22 19 00 00      1.30231   39.89934   50.10066  182.87278
2014 09 22 20 00 00      1.36000   42.73184   47.26816  205.27529


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.