Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2014 10 21 00 00 00     19.81258   88.07012    1.92988  254.73104
2014 10 21 01 00 00     -1.00000   99.69854   -9.69854  264.24617
2014 10 21 02 00 00     -1.00000  111.18472  -21.18472  273.85681
2014 10 21 03 00 00     -1.00000  122.52783  -32.52783  284.44688
2014 10 21 04 00 00     -1.00000  133.27165  -43.27165  297.30367
2014 10 21 05 00 00     -1.00000  142.61428  -52.61428  314.45146
2014 10 21 06 00 00     -1.00000  149.04936  -59.04936  338.27763
2014 10 21 07 00 00     -1.00000  150.49479  -60.49479    7.66453
2014 10 21 08 00 00     -1.00000  146.28585  -56.28585   34.85572
2014 10 21 09 00 00     -1.00000  138.13928  -48.13928   55.06953
2014 10 21 10 00 00     -1.00000  127.96037  -37.96037   69.74366
2014 10 21 11 00 00     -1.00000  116.85352  -26.85352   81.26240
2014 10 21 12 00 00     -1.00000  105.40889  -15.40889   91.24107
2014 10 21 13 00 00     -1.00000   94.00202   -4.00202  100.72276
2014 10 21 14 00 00      7.56901   82.83408    7.16592  110.49153
2014 10 21 15 00 00      3.30838   72.57981   17.42019  121.26500
2014 10 21 16 00 00      2.23207   63.49193   26.50807  133.77337
2014 10 21 17 00 00      1.79840   56.30097   33.69903  148.65778
2014 10 21 18 00 00      1.61707   51.87514   38.12486  166.03512
2014 10 21 19 00 00      1.58565   50.97479   39.02521  184.87144
2014 10 21 20 00 00      1.68936   53.78356   36.21644  203.15654
2014 10 21 21 00 00      1.98030   59.76425   30.23575  219.27380
2014 10 21 22 00 00      2.65960   68.04773   21.95227  232.84872
2014 10 21 23 00 00      4.64856   77.83345   12.16655  244.34874
2014 10 22 00 00 00     21.19899   88.30805    1.69195  254.48974


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.