Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2018 02 20 10 00 00     -1.00000  133.15641  -43.15641   63.28898
2018 02 20 11 00 00     -1.00000  122.37501  -32.37501   76.05024
2018 02 20 12 00 00     -1.00000  111.01783  -21.01783   86.58641
2018 02 20 13 00 00     -1.00000   99.53378   -9.53378   96.17347
2018 02 20 14 00 00     19.09061   87.93461    2.06539  105.68826
2018 02 20 15 00 00      4.50988   77.43659   12.56341  115.86245
2018 02 20 16 00 00      2.61790   67.67437   22.32563  127.41917
2018 02 20 17 00 00      1.96104   59.43340   30.56660  141.07687
2018 02 20 18 00 00      1.67893   53.52117   36.47883  157.29433
2018 02 20 19 00 00      1.58003   50.80851   39.19149  175.66427
2018 02 20 20 00 00      1.61506   51.81905   38.18095  194.52932
2018 02 20 21 00 00      1.80052   56.34616   33.65384  211.87665
2018 02 20 22 00 00      2.24167   63.61533   26.38467  226.70605
2018 02 20 23 00 00      3.34066   72.75728   17.24272  239.16377
2018 02 21 00 00 00      7.77120   83.04380    6.95620  249.90328
2018 02 21 01 00 00     -1.00000   94.23511   -4.23511  259.65815
2018 02 21 02 00 00     -1.00000  105.64918  -15.64918  269.14813
2018 02 21 03 00 00     -1.00000  117.08770  -27.08770  279.16219
2018 02 21 04 00 00     -1.00000  128.17077  -38.17077  290.75391
2018 02 21 05 00 00     -1.00000  138.29730  -48.29730  305.55370
2018 02 21 06 00 00     -1.00000  146.34314  -56.34314  325.93802
2018 02 21 07 00 00     -1.00000  150.39367  -60.39367  353.21109
2018 02 21 08 00 00     -1.00000  148.78958  -58.78958   22.41803
2018 02 21 09 00 00     -1.00000  142.26129  -52.26129   45.98730
2018 02 21 10 00 00     -1.00000  132.87790  -42.87790   62.97283


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.