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 27 08 00 00     -1.00000  119.56422  -29.56422   14.54275
2017 07 27 09 00 00     -1.00000  115.22917  -25.22917   29.75048
2017 07 27 10 00 00     -1.00000  108.40124  -18.40124   43.13841
2017 07 27 11 00 00     -1.00000   99.74280   -9.74280   54.71536
2017 07 27 12 00 00     29.14341   89.29738    0.70262   64.88104
2017 07 27 13 00 00      5.10700   78.99185   11.00815   74.17101
2017 07 27 14 00 00      2.62987   67.78291   22.21709   83.18118
2017 07 27 15 00 00      1.79995   56.33403   33.66597   92.64198
2017 07 27 16 00 00      1.41223   44.98504   45.01496  103.66393
2017 07 27 17 00 00      1.20916   34.26669   55.73331  118.33232
2017 07 27 18 00 00      1.10611   25.36522   64.63478  140.84665
2017 07 27 19 00 00      1.07072   21.00996   68.99004  175.69611
2017 07 27 20 00 00      1.09338   23.91630   66.08370  212.61899
2017 07 27 21 00 00      1.18018   32.13822   57.86178  237.59054
2017 07 27 22 00 00      1.35732   42.60889   47.39111  253.49531
2017 07 27 23 00 00      1.69353   53.88743   36.11257  265.06977
2017 07 28 00 00 00      2.38767   65.35741   24.64259  274.74591
2017 07 28 01 00 00      4.26152   76.66084   13.33916  283.77611
2017 07 28 02 00 00     16.47422   87.35839    2.64161  292.94466
2017 07 28 03 00 00     -1.00000   97.78646   -7.78646  302.86700
2017 07 28 04 00 00     -1.00000  106.79090  -16.79090  314.09604
2017 07 28 05 00 00     -1.00000  114.10344  -24.10344  327.08275
2017 07 28 06 00 00     -1.00000  119.06858  -29.06858  341.95773
2017 07 28 07 00 00     -1.00000  121.06529  -31.06529  358.20103
2017 07 28 08 00 00     -1.00000  119.78894  -29.78894   14.60171

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