Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2017 09 22 07 00 00     -1.00000  139.75489  -49.75489    2.82151
2017 09 22 08 00 00     -1.00000  136.97548  -46.97548   25.10282
2017 09 22 09 00 00     -1.00000  130.45436  -40.45436   43.87592
2017 09 22 10 00 00     -1.00000  121.48308  -31.48308   58.78903
2017 09 22 11 00 00     -1.00000  111.09526  -21.09526   70.89718
2017 09 22 12 00 00     -1.00000   99.95884   -9.95884   81.35371
2017 09 22 13 00 00     20.38502   88.17169    1.82831   91.09891
2017 09 22 14 00 00      4.37936   77.03998   12.96002  100.94033
2017 09 22 15 00 00      2.45294   66.06243   23.93757  111.70624
2017 09 22 16 00 00      1.78190   55.94441   34.05559  124.39402
2017 09 22 17 00 00      1.47681   47.44803   42.55197  140.20363
2017 09 22 18 00 00      1.33823   41.70985   48.29015  160.03163
2017 09 22 19 00 00      1.30435   40.00670   49.99330  182.90318
2017 09 22 20 00 00      1.36238   42.84024   47.15976  205.25691
2017 09 22 21 00 00      1.53483   49.41321   40.58679  224.03824
2017 09 22 22 00 00      1.90479   58.42198   31.57802  238.92766
2017 09 22 23 00 00      2.75158   68.82839   21.17161  251.00512
2017 09 23 00 00 00      5.55771   79.94517   10.05483  261.43265
2017 09 23 01 00 00     -1.00000   91.49865   -1.49865  271.15194
2017 09 23 02 00 00     -1.00000  102.92532  -12.92532  280.96995
2017 09 23 03 00 00     -1.00000  113.95580  -23.95580  291.71466
2017 09 23 04 00 00     -1.00000  124.11014  -34.11014  304.38551
2017 09 23 05 00 00     -1.00000  132.64105  -42.64105  320.19071
2017 09 23 06 00 00     -1.00000  138.41277  -48.41277  340.04427
2017 09 23 07 00 00     -1.00000  140.14037  -50.14037    2.98141


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.