Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2014 04 16 16 00 00      1.54048   49.59366   40.40634  114.12562
2014 04 16 17 00 00      1.30109   39.83457   50.16543  129.95897
2014 04 16 18 00 00      1.18530   32.53092   57.46908  151.86246
2014 04 16 19 00 00      1.15046   29.69307   60.30693  180.12354
2014 04 16 20 00 00      1.18553   32.54866   57.45134  208.36923
2014 04 16 21 00 00      1.30158   39.86051   50.13949  230.24907
2014 04 16 22 00 00      1.54126   49.61858   40.38142  246.06979
2014 04 16 23 00 00      2.02669   60.53125   29.46875  258.22256
2014 04 17 00 00 00      3.19117   71.90404   18.09596  268.49665
2014 04 17 01 00 00      8.00803   83.27648    6.72352  278.04070
2014 04 17 02 00 00     -1.00000   94.58684   -4.58684  287.68269
2014 04 17 03 00 00     -1.00000  105.15511  -15.15511  298.14955
2014 04 17 04 00 00     -1.00000  114.65393  -24.65393  310.17742
2014 04 17 05 00 00     -1.00000  122.44283  -32.44283  324.47005
2014 04 17 06 00 00     -1.00000  127.68035  -37.68035  341.35334
2014 04 17 07 00 00     -1.00000  129.52573  -39.52573    0.11627
2014 04 17 08 00 00     -1.00000  127.60705  -37.60705   18.85670
2014 04 17 09 00 00     -1.00000  122.30921  -32.30921   35.68772
2014 04 17 10 00 00     -1.00000  114.47644  -24.47644   49.92336
2014 04 17 11 00 00     -1.00000  104.94668  -14.94668   61.90193
2014 04 17 12 00 00     -1.00000   94.35550   -4.35550   72.32868
2014 04 17 13 00 00      7.75792   83.03035    6.96965   81.93754
2014 04 17 14 00 00      3.14711   71.63641   18.36359   91.45345
2014 04 17 15 00 00      2.00897   60.24320   29.75680  101.70496
2014 04 17 16 00 00      1.53150   49.30595   40.69405  113.84835


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.