Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2017 01 22 20 00 00      2.02561   60.51385   29.48615  193.08473
2017 01 22 21 00 00      2.31959   64.57530   25.42470  208.35057
2017 01 22 22 00 00      3.07333   71.17028   18.82972  221.85115
2017 01 22 23 00 00      5.39805   79.62553   10.37447  233.53923
2017 01 23 00 00 00     26.69518   89.04325    0.95675  243.78340
2017 01 23 01 00 00     -1.00000  100.18360  -10.18360  253.10452
2017 01 23 02 00 00     -1.00000  111.38667  -21.38667  262.08591
2017 01 23 03 00 00     -1.00000  122.83775  -32.83775  271.43419
2017 01 23 04 00 00     -1.00000  134.22680  -44.22680  282.20562
2017 01 23 05 00 00     -1.00000  145.06372  -55.06372  296.36623
2017 01 23 06 00 00     -1.00000  154.26166  -64.26166  317.95691
2017 01 23 07 00 00     -1.00000  159.22196  -69.22196  352.10819
2017 01 23 08 00 00     -1.00000  156.92220  -66.92220   30.12868
2017 01 23 09 00 00     -1.00000  148.96249  -58.96249   56.27659
2017 01 23 10 00 00     -1.00000  138.57479  -48.57479   72.70750
2017 01 23 11 00 00     -1.00000  127.31681  -37.31681   84.48795
2017 01 23 12 00 00     -1.00000  115.83662  -25.83662   94.23019
2017 01 23 13 00 00     -1.00000  104.48782  -14.48782  103.25177
2017 01 23 14 00 00     -1.00000   93.55249   -3.55249  112.35765
2017 01 23 15 00 00      7.94089   83.21186    6.78814  122.16614
2017 01 23 16 00 00      3.62574   74.18298   15.81702  133.22773
2017 01 23 17 00 00      2.51952   66.74067   23.25933  145.99923
2017 01 23 18 00 00      2.09359   61.56836   28.43164  160.64540
2017 01 23 19 00 00      1.95328   59.29805   30.70195  176.71690
2017 01 23 20 00 00      2.01064   60.27051   29.72949  193.06759


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.