Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2014 09 21 06 00 00     -1.00000  137.50669  -47.50669  340.10080
2014 09 21 07 00 00     -1.00000  139.26391  -49.26391    2.62120
2014 09 21 08 00 00     -1.00000  136.54274  -46.54274   24.71461
2014 09 21 09 00 00     -1.00000  130.09310  -40.09310   43.40793
2014 09 21 10 00 00     -1.00000  121.18132  -31.18132   58.31067
2014 09 21 11 00 00     -1.00000  110.83389  -20.83389   70.43075
2014 09 21 12 00 00     -1.00000   99.71982   -9.71982   80.89880
2014 09 21 13 00 00     19.22527   87.96055    2.03945   90.64721
2014 09 21 14 00 00      4.30380   76.79928   13.20072  100.48187
2014 09 21 15 00 00      2.42774   65.79520   24.20480  111.23349
2014 09 21 16 00 00      1.76776   55.63242   34.36758  123.90960
2014 09 21 17 00 00      1.46640   47.07218   42.92782  139.73872
2014 09 21 18 00 00      1.32903   41.26160   48.73840  159.67141
2014 09 21 19 00 00      1.29496   39.50749   50.49251  182.75775
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


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.