Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2014 09 17 06 00 00     -1.00000  135.91700  -45.91700  340.18782
2014 09 17 07 00 00     -1.00000  137.72515  -47.72515    2.01156
2014 09 17 08 00 00     -1.00000  135.18163  -45.18163   23.53156
2014 09 17 09 00 00     -1.00000  128.95309  -38.95309   41.96897
2014 09 17 10 00 00     -1.00000  120.22882  -30.22882   56.82823
2014 09 17 11 00 00     -1.00000  110.01140  -20.01140   68.97718
2014 09 17 12 00 00     -1.00000   98.97172   -8.97172   79.47538
2014 09 17 13 00 00     16.20970   87.29110    2.70890   89.22900
2014 09 17 14 00 00      4.08590   76.05478   13.94522   99.03716
2014 09 17 15 00 00      2.35357   64.97193   25.02807  109.73649
2014 09 17 16 00 00      1.72591   54.67165   35.32835  122.36447
2014 09 17 17 00 00      1.43552   45.91068   44.08932  138.23939
2014 09 17 18 00 00      1.30170   39.86723   50.13277  158.49271
2014 09 17 19 00 00      1.26702   37.94548   52.05452  182.27290
2014 09 17 20 00 00      1.31886   40.75413   49.24587  205.60503
2014 09 17 21 00 00      1.47648   47.43633   42.56367  224.98092
2014 09 17 22 00 00      1.81145   56.57741   33.42259  240.11419
2014 09 17 23 00 00      2.55500   67.08635   22.91365  252.26501
2014 09 18 00 00 00      4.81098   78.26910   11.73090  262.70480
2014 09 18 01 00 00     29.16023   89.29902    0.70098  272.41977
2014 09 18 02 00 00     -1.00000  101.22133  -11.22133  282.22602
2014 09 18 03 00 00     -1.00000  112.17990  -22.17990  292.93415
2014 09 18 04 00 00     -1.00000  122.22304  -32.22304  305.48811
2014 09 18 05 00 00     -1.00000  130.62435  -40.62435  320.97792
2014 09 18 06 00 00     -1.00000  136.31359  -46.31359  340.16712


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.