Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2018 07 20 17 00 00      1.19416   33.19321   56.80679  116.38951
2018 07 20 18 00 00      1.09453   24.05199   65.94801  138.99853
2018 07 20 19 00 00      1.06029   19.48624   70.51376  175.50734
2018 07 20 20 00 00      1.08239   22.56589   67.43411  214.42486
2018 07 20 21 00 00      1.16662   31.05939   58.94061  239.65708
2018 07 20 22 00 00      1.33764   41.68136   48.31864  255.30877
2018 07 20 23 00 00      1.65929   53.01575   36.98425  266.63728
2018 07 21 00 00 00      2.31171   64.48147   25.51853  276.13466
2018 07 21 01 00 00      4.00056   75.74078   14.25922  285.03831
2018 07 21 02 00 00     13.33691   86.40855    3.59145  294.10965
2018 07 21 03 00 00     -1.00000   96.67407   -6.67407  303.93869
2018 07 21 04 00 00     -1.00000  105.54966  -15.54966  315.04579
2018 07 21 05 00 00     -1.00000  112.72719  -22.72719  327.84067
2018 07 21 06 00 00     -1.00000  117.57923  -27.57923  342.41870
2018 07 21 07 00 00     -1.00000  119.52119  -29.52119  358.27089
2018 07 21 08 00 00     -1.00000  118.27006  -28.27006   14.26639
2018 07 21 09 00 00     -1.00000  114.01186  -24.01186   29.19469
2018 07 21 10 00 00     -1.00000  107.28862  -17.28862   42.39340
2018 07 21 11 00 00     -1.00000   98.73623   -8.73623   53.84889
2018 07 21 12 00 00     22.59453   88.52242    1.47758   63.92597
2018 07 21 13 00 00      4.76679   78.15351   11.84649   73.13089
2018 07 21 14 00 00      2.54446   66.98476   23.01524   82.03688
2018 07 21 15 00 00      1.76390   55.54600   34.45400   91.35494
2018 07 21 16 00 00      1.39241   44.16072   45.83928  102.18141
2018 07 21 17 00 00      1.19607   33.33297   56.66703  116.63243


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.