Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2015 01 28 08 00 00     -1.00000  155.98759  -65.98759   28.47352
2015 01 28 09 00 00     -1.00000  148.28364  -58.28364   54.50386
2015 01 28 10 00 00     -1.00000  138.03929  -48.03929   71.18311
2015 01 28 11 00 00     -1.00000  126.83879  -36.83879   83.18030
2015 01 28 12 00 00     -1.00000  115.36279  -25.36279   93.07013
2015 01 28 13 00 00     -1.00000  103.98137  -13.98137  102.18727
2015 01 28 14 00 00     -1.00000   92.98379   -2.98379  111.35610
2015 01 28 15 00 00      7.32354   82.56447    7.43553  121.21408
2015 01 28 16 00 00      3.46628   73.41534   16.58466  132.33562
2015 01 28 17 00 00      2.43224   65.84332   24.15668  145.21063
2015 01 28 18 00 00      2.02751   60.54448   29.45552  160.03985
2015 01 28 19 00 00      1.89189   58.18007   31.81993  176.38312
2015 01 28 20 00 00      1.94297   59.11606   30.88394  193.04534
2015 01 28 21 00 00      2.20983   63.20128   26.79872  208.64321
2015 01 28 22 00 00      2.88474   69.86464   20.13536  222.38414
2015 01 28 23 00 00      4.86477   78.40696   11.59304  234.23193
2015 01 29 00 00 00     19.61454   88.03380    1.96620  244.58831
2015 01 29 01 00 00     -1.00000   99.09364   -9.09364  254.00447
2015 01 29 02 00 00     -1.00000  110.33546  -20.33546  263.08602
2015 01 29 03 00 00     -1.00000  121.79622  -31.79622  272.55477
2015 01 29 04 00 00     -1.00000  133.15446  -43.15446  283.46932
2015 01 29 05 00 00     -1.00000  143.90164  -53.90164  297.74079
2015 01 29 06 00 00     -1.00000  152.94290  -62.94290  319.08629
2015 01 29 07 00 00     -1.00000  157.81513  -67.81513  351.77220
2015 01 29 08 00 00     -1.00000  155.75942  -65.75942   28.12604


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.