Solar Geom Calc

Solar Geometry Calculator
Latitude:	Longitude:	UTC Start Date:	UTC End Date:	Local Time Zone:	Interval (secs):

Local Date Format: Show GMT: Airmass: Solar Zenith Angle: Elevation: Azimuth:

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2017 07 19 13 00 00      4.68335   77.92931   12.07069   72.87856
2017 07 19 14 00 00      2.52259   66.77094   23.22906   81.75712
2017 07 19 15 00 00      1.75456   55.33540   34.66460   91.03846
2017 07 19 16 00 00      1.38730   43.94215   46.05785  101.81526
2017 07 19 17 00 00      1.19275   33.08861   56.91139  116.21149
2017 07 19 18 00 00      1.09346   23.92603   66.07397  138.83173
2017 07 19 19 00 00      1.05936   19.34302   70.65698  175.51140
2017 07 19 20 00 00      1.08143   22.44403   67.55597  214.62241
2017 07 19 21 00 00      1.16547   30.96547   59.03453  239.86788
2017 07 19 22 00 00      1.33600   41.60200   48.39800  255.48917
2017 07 19 23 00 00      1.65645   52.94137   37.05863  266.79160
2017 07 20 00 00 00      2.30543   64.40625   25.59375  276.27086
2017 07 20 01 00 00      3.97941   75.66084   14.33916  285.16206
2017 07 20 02 00 00     13.10995   86.32401    3.67599  294.22416
2017 07 20 03 00 00     -1.00000   96.57479   -6.57479  304.04465
2017 07 20 04 00 00     -1.00000  105.43739  -15.43739  315.14081
2017 07 20 05 00 00     -1.00000  112.60116  -22.60116  327.91849
2017 07 20 06 00 00     -1.00000  117.44122  -27.44122  342.46969
2017 07 20 07 00 00     -1.00000  119.37640  -29.37640  358.28612
2017 07 20 08 00 00     -1.00000  118.12584  -28.12584   14.24390
2017 07 20 09 00 00     -1.00000  113.87467  -23.87467   29.14085
2017 07 20 10 00 00     -1.00000  107.16187  -17.16187   42.31769
2017 07 20 11 00 00     -1.00000   98.62047   -8.62047   53.75872
2017 07 20 12 00 00     21.96612   88.42871    1.57129   63.82512
2017 07 20 13 00 00      4.73006   78.05581   11.94419   73.01997

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:

yy[yy] Format for years. Two or four digits.
M[MM] Format for months. MM=01-12, MMM=Jan-Dec, MMMM=January-December
d[d] Format for day of month. One or Two digits.
D[DD] Format for day-of-year. One to three digits (zero padded).
HH[or hh] Format for hour-of-day. HH=24 hr clock, hh=12 hr clock.
mm Format for minutes. mm=00-59.
ss Format for seconds. ss=00=59.
a AM/PM.
z Timezone Acronym.
Z Timezone hours offset. Examples: +0600, -0200

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.

Solar Geometry Calculator