Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2015 07 04 21 00 00      1.15174   29.80508   60.19492  243.57274
2015 07 04 22 00 00      1.31724   40.67205   49.32795  258.53260
2015 07 04 23 00 00      1.62445   52.08006   37.91994  269.35817
2015 07 05 00 00 00      2.23420   63.51941   26.48059  278.52930
2015 07 05 01 00 00      3.73858   74.68556   15.31444  287.22169
2015 07 05 02 00 00     10.73015   85.24153    4.75847  296.14757
2015 07 05 03 00 00     -1.00000   95.26195   -5.26195  305.85287
2015 07 05 04 00 00     -1.00000  103.89536  -13.89536  316.80669
2015 07 05 05 00 00     -1.00000  110.80895  -20.80895  329.35436
2015 07 05 06 00 00     -1.00000  115.41542  -25.41542  343.53175
2015 07 05 07 00 00     -1.00000  117.18654  -27.18654  358.83012
2015 07 05 08 00 00     -1.00000  115.88059  -25.88059   14.21788
2015 07 05 09 00 00     -1.00000  111.67812  -21.67812   28.61661
2015 07 05 10 00 00     -1.00000  105.07871  -15.07871   41.42481
2015 07 05 11 00 00     -1.00000   96.67296   -6.67296   52.60858
2015 07 05 12 00 00     14.32914   86.74939    3.25061   62.48157
2015 07 05 13 00 00      4.17042   76.35290   13.64710   71.50109
2015 07 05 14 00 00      2.37850   65.25494   24.74506   80.20025
2015 07 05 15 00 00      1.69172   53.84232   36.15768   89.25579
2015 07 05 16 00 00      1.35305   42.41095   47.58905   99.74236
2015 07 05 17 00 00      1.17108   31.42080   58.57920  113.84851
2015 07 05 18 00 00      1.07795   21.98988   68.01012  136.78379
2015 07 05 19 00 00      1.04675   17.26492   72.73508  176.42402
2015 07 05 20 00 00      1.06955   20.84530   69.15470  218.32203
2015 07 05 21 00 00      1.15211   29.83729   60.16271  243.37988


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.