Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2015 04 20 15 00 00      1.96576   59.51521   30.48479  100.96911
2015 04 20 16 00 00      1.50808   48.53331   41.46669  113.07729
2015 04 20 17 00 00      1.27968   38.66809   51.33191  128.97215
2015 04 20 18 00 00      1.16886   31.24182   58.75818  151.30244
2015 04 20 19 00 00      1.13603   28.38771   61.61229  180.55580
2015 04 20 20 00 00      1.17103   31.41695   58.58305  209.65809
2015 04 20 21 00 00      1.28466   38.94588   51.05412  231.75093
2015 04 20 22 00 00      1.51771   48.85496   41.14504  247.49225
2015 04 20 23 00 00      1.98525   59.84804   30.15196  259.52412
2015 04 21 00 00 00      3.08539   71.24806   18.75194  269.70270
2015 04 21 01 00 00      7.36728   82.61378    7.38622  279.18392
2015 04 21 02 00 00     -1.00000   93.86174   -3.86174  288.78754
2015 04 21 03 00 00     -1.00000  104.34362  -14.34362  299.22419
2015 04 21 04 00 00     -1.00000  113.72329  -23.72329  311.20056
2015 04 21 05 00 00     -1.00000  121.36941  -31.36941  325.36995
2015 04 21 06 00 00     -1.00000  126.46790  -36.46790  341.99780
2015 04 21 07 00 00     -1.00000  128.22398  -38.22398    0.36842
2015 04 21 08 00 00     -1.00000  126.29783  -36.29783   18.69038
2015 04 21 09 00 00     -1.00000  121.05942  -31.05942   35.20548
2015 04 21 10 00 00     -1.00000  113.31265  -23.31265   49.25392
2015 04 21 11 00 00     -1.00000  103.86490  -13.86490   61.13109
2015 04 21 12 00 00     -1.00000   93.33744   -3.33744   71.49624
2015 04 21 13 00 00      6.90819   82.06608    7.93392   81.05398
2015 04 21 14 00 00      2.99851   70.67301   19.32699   90.51408
2015 04 21 15 00 00      1.95103   59.25857   30.74143  100.70229


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.