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
2018 06 24 13 00 00      3.96138   75.59202   14.40798   71.30255
2018 06 24 14 00 00      2.31339   64.50154   25.49846   79.94074
2018 06 24 15 00 00      1.66223   53.09233   36.90767   88.93944
2018 06 24 16 00 00      1.33708   41.65431   48.34569   99.38165
2018 06 24 17 00 00      1.16157   30.64271   59.35729  113.51815
2018 06 24 18 00 00      1.07203   21.19190   68.80810  136.87720
2018 06 24 19 00 00      1.04310   16.60656   73.39344  177.99005
2018 06 24 20 00 00      1.06750   20.55463   69.44537  220.44013
2018 06 24 21 00 00      1.15135   29.77121   60.22879  244.99460
2018 06 24 22 00 00      1.31806   40.71328   49.28672  259.61835
2018 06 24 23 00 00      1.62656   52.13836   37.86164  270.25611
2018 06 25 00 00 00      2.23759   63.56308   26.43692  279.32420
2018 06 25 01 00 00      3.74015   74.69234   15.30766  287.96289
2018 06 25 02 00 00     10.64272   85.19324    4.80676  296.86523
2018 06 25 03 00 00     -1.00000   95.13588   -5.13588  306.56367
2018 06 25 04 00 00     -1.00000  103.67277  -13.67277  317.51278
2018 06 25 05 00 00     -1.00000  110.47200  -20.47200  330.03785
2018 06 25 06 00 00     -1.00000  114.95548  -24.95548  344.15092
2018 06 25 07 00 00     -1.00000  116.61243  -26.61243  359.33002
2018 06 25 08 00 00     -1.00000  115.21987  -25.21987   14.55891
2018 06 25 09 00 00     -1.00000  110.96656  -20.96656   28.79555
2018 06 25 10 00 00     -1.00000  104.34702  -14.34702   41.46661
2018 06 25 11 00 00     -1.00000   95.94090   -5.94090   52.54494
2018 06 25 12 00 00     12.44248   86.05908    3.94092   62.33759
2018 06 25 13 00 00      3.97544   75.64571   14.35429   71.29199

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