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
2013 05 24 03 00 00     -1.00000   97.96963   -7.96963  305.81087
2013 05 24 04 00 00     -1.00000  106.57501  -16.57501  317.14844
2013 05 24 05 00 00     -1.00000  113.38435  -23.38435  330.19933
2013 05 24 06 00 00     -1.00000  117.76982  -27.76982  344.97222
2013 05 24 07 00 00     -1.00000  119.18538  -29.18538    0.84818
2013 05 24 08 00 00     -1.00000  117.42360  -27.42360   16.65268
2013 05 24 09 00 00     -1.00000  112.74003  -22.74003   31.25036
2013 05 24 10 00 00     -1.00000  105.70201  -15.70201   44.09786
2013 05 24 11 00 00     -1.00000   96.93330   -6.93330   55.25786
2013 05 24 12 00 00     14.26728   86.72940    3.27060   65.12067
2013 05 24 13 00 00      4.10653   76.12869   13.87131   74.19559
2013 05 24 14 00 00      2.34740   64.90078   25.09922   83.06152
2013 05 24 15 00 00      1.67579   53.44132   36.55868   92.45960
2013 05 24 16 00 00      1.34595   42.07830   47.92170  103.58299
2013 05 24 17 00 00      1.17034   31.36164   58.63836  118.83082
2013 05 24 18 00 00      1.08286   22.62638   67.37362  143.39450
2013 05 24 19 00 00      1.05783   19.10480   70.89520  182.22688
2013 05 24 20 00 00      1.08869   23.35292   66.64708  219.84113
2013 05 24 21 00 00      1.18355   32.39734   57.60266  243.11147
2013 05 24 22 00 00      1.37071   43.21569   46.78431  257.76321
2013 05 24 23 00 00      1.72291   54.60050   35.39950  268.63343
2013 05 25 00 00 00      2.45083   66.04031   23.95969  277.93833
2013 05 25 01 00 00      4.43594   77.21478   12.78522  286.80144
2013 05 25 02 00 00     17.82945   87.67533    2.32467  295.93783
2013 05 25 03 00 00     -1.00000   97.81880   -7.81880  305.91588

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