Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2015 01 29 09 00 00     -1.00000  148.11180  -58.11180   54.11124
2015 01 29 10 00 00     -1.00000  137.90071  -47.90071   70.83847
2015 01 29 11 00 00     -1.00000  126.71421  -36.71421   82.88213
2015 01 29 12 00 00     -1.00000  115.23991  -25.23991   92.80474
2015 01 29 13 00 00     -1.00000  103.85164  -13.85164  101.94360
2015 01 29 14 00 00     -1.00000   92.84032   -2.84032  111.12711
2015 01 29 15 00 00      7.18415   82.40344    7.59656  120.99706
2015 01 29 16 00 00      3.42941   73.22735   16.77265  132.13343
2015 01 29 17 00 00      2.41211   65.62631   24.37369  145.03394
2015 01 29 18 00 00      2.01241   60.29955   29.70045  159.90782
2015 01 29 19 00 00      1.87801   57.91527   32.08473  176.31679
2015 01 29 20 00 00      1.92786   58.84525   31.15475  193.05341
2015 01 29 21 00 00      2.19011   62.93805   27.06195  208.71556
2015 01 29 22 00 00      2.85169   69.61707   20.38293  222.50173
2015 01 29 23 00 00      4.77599   78.17775   11.82225  234.37868
2015 01 30 00 00 00     18.60125   87.83763    2.16237  244.75518
2015 01 30 01 00 00     -1.00000   98.89106   -8.89106  254.18850
2015 01 30 02 00 00     -1.00000  110.14041  -20.14041  263.28864
2015 01 30 03 00 00     -1.00000  121.60266  -31.60266  272.78034
2015 01 30 04 00 00     -1.00000  132.95414  -42.95414  283.72269
2015 01 30 05 00 00     -1.00000  143.68265  -53.68265  298.01666
2015 01 30 06 00 00     -1.00000  152.69155  -62.69155  319.32051
2015 01 30 07 00 00     -1.00000  157.54192  -67.54192  351.74694
2015 01 30 08 00 00     -1.00000  155.52435  -65.52435   27.78674
2015 01 30 09 00 00     -1.00000  147.93267  -57.93267   53.72031


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.