Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2018 06 18 12 00 00     11.83310   85.79330    4.20670   62.55117
2018 06 18 13 00 00      3.90020   75.35360   14.64640   71.48704
2018 06 18 14 00 00      2.29272   64.25250   25.74750   80.12301
2018 06 18 15 00 00      1.65255   52.83859   37.16141   89.13649
2018 06 18 16 00 00      1.33191   41.40280   48.59720   99.62444
2018 06 18 17 00 00      1.15876   30.40688   59.59312  113.87899
2018 06 18 18 00 00      1.07073   21.01139   68.98861  137.53830
2018 06 18 19 00 00      1.04298   16.58465   73.41535  179.03330
2018 06 18 20 00 00      1.06854   20.70299   69.29701  221.17640
2018 06 18 21 00 00      1.15382   29.98490   60.01510  245.41405
2018 06 18 22 00 00      1.32269   40.94647   49.05353  259.90439
2018 06 18 23 00 00      1.63522   52.37487   37.62513  270.48735
2018 06 19 00 00 00      2.25578   63.79469   26.20531  279.53504
2018 06 19 01 00 00      3.79192   74.91247   15.08753  288.17206
2018 06 19 02 00 00     11.00861   85.39053    4.60947  297.08563
2018 06 19 03 00 00     -1.00000   95.31373   -5.31373  306.80570
2018 06 19 04 00 00     -1.00000  103.81480  -13.81480  317.78443
2018 06 19 05 00 00     -1.00000  110.56596  -20.56596  330.34183
2018 06 19 06 00 00     -1.00000  114.98924  -24.98924  344.47969
2018 06 19 07 00 00     -1.00000  116.57853  -26.57853  359.66348
2018 06 19 08 00 00     -1.00000  115.11976  -25.11976   14.87169
2018 06 19 09 00 00     -1.00000  110.81013  -20.81013   29.07008
2018 06 19 10 00 00     -1.00000  104.14771  -14.14771   41.69879
2018 06 19 11 00 00     -1.00000   95.71123   -5.71123   52.74018
2018 06 19 12 00 00     11.88781   85.81819    4.18181   62.50515


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.