Solar Geometry Calculator

 
              


Local UTC     SolarZen and Elev Uncorrected for Atmospheric Refaction
yyyy MM dd HH:mm      AirMass   SolarZen       Elev       Azim
2024 05 20 23:00      1.74240   55.07970   34.92030  267.98098
2024 05 21 00:00      2.49568   66.53897   23.46103  277.36270
2024 05 21 01:00      4.60005   77.76876   12.23124  286.28389
2024 05 21 02:00     20.26484   88.49104    1.50896  295.46968
2024 05 21 03:00     -1.00000   98.38366   -8.38366  305.50021
2024 05 21 04:00     -1.00000  107.02634  -17.02634  316.88912
2024 05 21 05:00     -1.00000  113.87094  -23.87094  330.01701
2024 05 21 06:00     -1.00000  118.27968  -28.27968  344.89995
2024 05 21 07:00     -1.00000  119.69587  -29.69587    0.90869
2024 05 21 08:00     -1.00000  117.90871  -27.90871   16.83958
2024 05 21 09:00     -1.00000  113.18130  -23.18130   31.53223
2024 05 21 10:00     -1.00000  106.09314  -16.09314   44.44030
2024 05 21 11:00     -1.00000   97.27719   -7.27719   55.63834
2024 05 21 12:00     15.20766   87.26634    2.73366   65.53051
2024 05 21 13:00      4.18468   76.46663   13.53337   74.63721
2024 05 21 14:00      2.36977   65.19097   24.80903   83.54631
2024 05 21 15:00      1.68575   53.71485   36.28515   93.00789
2024 05 21 16:00      1.35166   42.36113   47.63887  104.22388
2024 05 21 17:00      1.17433   31.68975   58.31025  119.58504
2024 05 21 18:00      1.08618   23.05046   66.94954  144.13241
2024 05 21 19:00      1.06110   19.61491   70.38509  182.32492
2024 05 21 20:00      1.09246   23.81426   66.18574  219.29080
2024 05 21 21:00      1.18856   32.78737   57.21263  242.49569
2024 05 21 22:00      1.37841   43.57145   46.42855  257.22333
2024 05 21 23:00      1.73686   54.95125   35.04875  268.16685


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.