Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2017 04 27 14 00 00      2.78944   69.13371   20.86629   88.90986
2017 04 27 15 00 00      1.86643   57.69079   32.30921   98.96890
2017 04 27 16 00 00      1.45352   46.59638   43.40362  110.93975
2017 04 27 17 00 00      1.24337   36.52122   53.47878  126.88144
2017 04 27 18 00 00      1.14083   28.83174   61.16826  150.00565
2017 04 27 19 00 00      1.11124   25.91920   64.08080  181.34662
2017 04 27 20 00 00      1.14588   29.28811   60.71189  212.22906
2017 04 27 21 00 00      1.25496   37.23182   52.76818  234.68479
2017 04 27 22 00 00      1.47587   47.41468   42.58532  250.22181
2017 04 27 23 00 00      1.91137   58.54397   31.45603  261.99337
2017 04 28 00 00 00      2.90049   69.98060   20.01940  271.97188
2017 04 28 01 00 00      6.36408   81.31768    8.68232  281.31853
2017 04 28 02 00 00     -1.00000   92.44151   -2.44151  290.83267
2017 04 28 03 00 00     -1.00000  102.75459  -12.75459  301.19102
2017 04 28 04 00 00     -1.00000  111.90991  -21.90991  313.04392
2017 04 28 05 00 00     -1.00000  119.29627  -29.29627  326.95497
2017 04 28 06 00 00     -1.00000  124.15155  -34.15155  343.09247
2017 04 28 07 00 00     -1.00000  125.76109  -35.76109    0.74700
2017 04 28 08 00 00     -1.00000  123.83626  -33.83626   18.31977
2017 04 28 09 00 00     -1.00000  118.71832  -28.71832   34.26501
2017 04 28 10 00 00     -1.00000  111.14026  -21.14026   47.96644
2017 04 28 11 00 00     -1.00000  101.85469  -11.85469   59.64719
2017 04 28 12 00 00     -1.00000   91.45619   -1.45619   69.88586
2017 04 28 13 00 00      5.73996   80.28856    9.71144   79.33290
2017 04 28 14 00 00      2.76200   68.91332   21.08668   88.66737


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.