Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2014 12 20 21 00 00      2.83575   69.49542   20.50458  209.86923
2014 12 20 22 00 00      4.14267   76.25639   13.74361  222.39529
2014 12 20 23 00 00      9.79903   84.68591    5.31409  233.34688
2014 12 21 00 00 00     -1.00000   94.60269   -4.60269  243.04686
2014 12 21 01 00 00     -1.00000  105.20789  -15.20789  251.94812
2014 12 21 02 00 00     -1.00000  116.35563  -26.35563  260.58144
2014 12 21 03 00 00     -1.00000  127.78756  -37.78756  269.63704
2014 12 21 04 00 00     -1.00000  139.21882  -49.21882  280.24898
2014 12 21 05 00 00     -1.00000  150.17230  -60.17230  294.81828
2014 12 21 06 00 00     -1.00000  159.41795  -69.41795  319.26263
2014 12 21 07 00 00     -1.00000  163.42937  -73.42937    1.65622
2014 12 21 08 00 00     -1.00000  158.89219  -68.89219   42.94295
2014 12 21 09 00 00     -1.00000  149.45358  -59.45358   66.40074
2014 12 21 10 00 00     -1.00000  138.44253  -48.44253   80.56854
2014 12 21 11 00 00     -1.00000  126.99995  -36.99995   91.01928
2014 12 21 12 00 00     -1.00000  115.57955  -25.57955  100.01748
2014 12 21 13 00 00     -1.00000  104.46096  -14.46096  108.65001
2014 12 21 14 00 00     -1.00000   93.90377   -3.90377  117.59028
2014 12 21 15 00 00      8.93500   84.07312    5.92688  127.36266
2014 12 21 16 00 00      3.99886   75.73438   14.26562  138.41422
2014 12 21 17 00 00      2.78684   69.11302   20.88698  151.05337
2014 12 21 18 00 00      2.34183   64.83632   25.16368  165.25822
2014 12 21 19 00 00      2.22547   63.40630   26.59370  180.46429
2014 12 21 20 00 00      2.35758   65.01783   24.98217  195.63628
2014 12 21 21 00 00      2.83015   69.45238   20.54762  209.75653


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.