Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2015 07 27 15 00 00      1.79674   56.26540   33.73460   92.52660
2015 07 27 16 00 00      1.41046   44.91291   45.08709  103.53153
2015 07 27 17 00 00      1.20799   34.18448   55.81552  118.18123
2015 07 27 18 00 00      1.10519   25.26403   64.73597  140.70309
2015 07 27 19 00 00      1.06988   20.89176   69.10824  175.67345
2015 07 27 20 00 00      1.09247   23.80928   66.19072  212.74522
2015 07 27 21 00 00      1.17906   32.05106   57.94894  237.74219
2015 07 27 22 00 00      1.35569   42.53336   47.46664  253.63087
2015 07 27 23 00 00      1.69068   53.81644   36.18356  265.18790
2015 07 28 00 00 00      2.38131   65.28638   24.71362  274.85096
2015 07 28 01 00 00      4.23923   76.58672   13.41328  283.87172
2015 07 28 02 00 00     16.17927   87.28323    2.71677  293.03290
2015 07 28 03 00 00     -1.00000   97.69806   -7.69806  302.94802
2015 07 28 04 00 00     -1.00000  106.69289  -16.69289  314.16748
2015 07 28 05 00 00     -1.00000  113.99540  -23.99540  327.13901
2015 07 28 06 00 00     -1.00000  118.95230  -28.95230  341.99045
2015 07 28 07 00 00     -1.00000  120.94544  -30.94544  358.20284
2015 07 28 08 00 00     -1.00000  119.67181  -29.67181   14.57178
2015 07 28 09 00 00     -1.00000  115.32926  -25.32926   29.80257
2015 07 28 10 00 00     -1.00000  108.49176  -18.49176   43.20564
2015 07 28 11 00 00     -1.00000   99.82392   -9.82392   54.79200
2015 07 28 12 00 00     29.75756   89.35605    0.64395   64.96446
2015 07 28 13 00 00      5.13614   79.05851   10.94149   74.26109
2015 07 28 14 00 00      2.63692   67.84628   22.15372   83.27968
2015 07 28 15 00 00      1.80290   56.39676   33.60324   92.75227


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.