Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2015 04 24 15 00 00      1.90972   58.51352   31.48648   99.90261
2015 04 24 16 00 00      1.47742   47.46998   42.53002  111.94516
2015 04 24 17 00 00      1.25932   37.49246   52.50754  127.87832
2015 04 24 18 00 00      1.15317   29.92906   60.07094  150.64359
2015 04 24 19 00 00      1.12219   27.04876   62.95124  180.99286
2015 04 24 20 00 00      1.15704   30.26087   59.73913  211.03212
2015 04 24 21 00 00      1.26821   38.01444   51.98556  233.32832
2015 04 24 22 00 00      1.49462   48.07418   41.92582  248.96754
2015 04 24 23 00 00      1.94453   59.14381   30.85619  260.86322
2015 04 25 00 00 00      2.98292   70.56609   19.43391  270.93638
2015 04 25 01 00 00      6.79404   81.91876    8.08124  280.34719
2015 04 25 02 00 00     -1.00000   93.10036   -3.10036  289.90509
2015 04 25 03 00 00     -1.00000  103.49140  -13.49140  300.30280
2015 04 25 04 00 00     -1.00000  112.74899  -22.74899  312.21651
2015 04 25 05 00 00     -1.00000  120.25228  -30.25228  326.24987
2015 04 25 06 00 00     -1.00000  125.21537  -35.21537  342.61293
2015 04 25 07 00 00     -1.00000  126.88807  -36.88807    0.59110
2015 04 25 08 00 00     -1.00000  124.95982  -34.95982   18.50010
2015 04 25 09 00 00     -1.00000  119.78514  -29.78514   34.70164
2015 04 25 10 00 00     -1.00000  112.12865  -22.12865   48.56054
2015 04 25 11 00 00     -1.00000  102.76755  -12.76755   60.33172
2015 04 25 12 00 00     -1.00000   92.30853   -2.30853   70.62975
2015 04 25 13 00 00      6.21660   81.09279    8.90721   80.12966
2015 04 25 14 00 00      2.86359   69.70695   20.29305   89.52492
2015 04 25 15 00 00      1.89686   58.27375   31.72625   99.63657


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.