Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2017 01 17 20 00 00      2.09896   61.64830   28.35170  193.23556
2017 01 17 21 00 00      2.42009   65.71286   24.28714  208.23081
2017 01 17 22 00 00      3.25368   72.27075   17.72925  221.52677
2017 01 17 23 00 00      5.95492   80.66693    9.33307  233.07280
2017 01 18 00 00 00     35.38426   89.82207    0.17793  243.21460
2017 01 18 01 00 00     -1.00000  101.13554  -11.13554  252.45016
2017 01 18 02 00 00     -1.00000  112.30836  -22.30836  261.34520
2017 01 18 03 00 00     -1.00000  123.74984  -33.74984  270.59438
2017 01 18 04 00 00     -1.00000  135.15893  -45.15893  281.25336
2017 01 18 05 00 00     -1.00000  146.05960  -56.05960  295.33843
2017 01 18 06 00 00     -1.00000  155.36830  -65.36830  317.18673
2017 01 18 07 00 00     -1.00000  160.35731  -70.35731  352.72547
2017 01 18 08 00 00     -1.00000  157.78593  -67.78593   32.12556
2017 01 18 09 00 00     -1.00000  149.54161  -59.54161   58.23660
2017 01 18 10 00 00     -1.00000  139.00789  -49.00789   74.33836
2017 01 18 11 00 00     -1.00000  127.69632  -37.69632   85.86904
2017 01 18 12 00 00     -1.00000  116.21751  -26.21751   95.45015
2017 01 18 13 00 00     -1.00000  104.90768  -14.90768  104.37146
2017 01 18 14 00 00     -1.00000   94.04184   -4.04184  113.41462
2017 01 18 15 00 00      8.58069   83.78805    6.21195  123.17734
2017 01 18 16 00 00      3.78660   74.89012   15.10988  134.18572
2017 01 18 17 00 00      2.60869   67.59025   22.40975  146.86345
2017 01 18 18 00 00      2.16248   62.56015   27.43985  161.33885
2017 01 18 19 00 00      2.01875   60.40283   29.59717  177.15093
2017 01 18 20 00 00      2.08455   61.43271   28.56729  193.19692


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.