Solar Geometry Calculator

 
              

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2017 01 19 12 00 00     -1.00000  116.15387  -26.15387   95.21320
2017 01 19 13 00 00     -1.00000  104.83609  -14.83609  104.15386
2017 01 19 14 00 00     -1.00000   93.95642   -3.95642  113.20881
2017 01 19 15 00 00      8.45955   83.68537    6.31463  122.97978
2017 01 19 16 00 00      3.75628   74.76161   15.23839  133.99755
2017 01 19 17 00 00      2.59173   67.43350   22.56650  146.69212
2017 01 19 18 00 00      2.14923   62.37490   27.62510  161.19882
2017 01 19 19 00 00      2.00601   60.19434   29.80566  177.05912
2017 01 19 20 00 00      2.07000   61.21137   28.78863  193.16245
2017 01 19 21 00 00      2.38002   65.27191   24.72809  208.26215
2017 01 19 22 00 00      3.18080   71.84177   18.15823  221.63809
2017 01 19 23 00 00      5.72391   80.25920    9.74080  233.24031
2017 01 20 00 00 00     31.70523   89.53075    0.46925  243.42286
2017 01 20 01 00 00     -1.00000  100.76022  -10.76022  252.69233
2017 01 20 02 00 00     -1.00000  111.94444  -21.94444  261.62115
2017 01 20 03 00 00     -1.00000  123.38974  -33.38974  270.90848
2017 01 20 04 00 00     -1.00000  134.79163  -44.79163  281.60997
2017 01 20 05 00 00     -1.00000  145.66884  -55.66884  295.72162
2017 01 20 06 00 00     -1.00000  154.93709  -64.93709  317.46192
2017 01 20 07 00 00     -1.00000  159.92104  -69.92104  352.44076
2017 01 20 08 00 00     -1.00000  157.46377  -67.46377   31.31039
2017 01 20 09 00 00     -1.00000  149.33270  -59.33270   57.45781
2017 01 20 10 00 00     -1.00000  138.85547  -48.85547   73.69685
2017 01 20 11 00 00     -1.00000  127.56401  -37.56401   85.32782
2017 01 20 12 00 00     -1.00000  116.08396  -26.08396   94.97257


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.