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 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
2013 05 25 04 00 00     -1.00000  106.41166  -16.41166  317.23442
2013 05 25 05 00 00     -1.00000  113.20951  -23.20951  330.25721
2013 05 25 06 00 00     -1.00000  117.58804  -27.58804  344.99061
2013 05 25 07 00 00     -1.00000  119.00482  -29.00482    0.81963
2013 05 25 08 00 00     -1.00000  117.25341  -27.25341   16.57998
2013 05 25 09 00 00     -1.00000  112.58651  -22.58651   31.14483
2013 05 25 10 00 00     -1.00000  105.56718  -15.56718   43.97160
2013 05 25 11 00 00     -1.00000   96.81591   -6.81591   55.11868
2013 05 25 12 00 00     13.97168   86.63166    3.36834   64.97140
2013 05 25 13 00 00      4.08104   76.03726   13.96274   74.03515
2013 05 25 14 00 00      2.34007   64.81592   25.18408   82.88554
2013 05 25 15 00 00      1.67253   53.35812   36.64188   92.26036
2013 05 25 16 00 00      1.34408   41.98942   48.01058  103.34911
2013 05 25 17 00 00      1.16902   31.25483   58.74517  118.55241
2013 05 25 18 00 00      1.08174   22.48288   67.51712  143.11294
2013 05 25 19 00 00      1.05669   18.92637   71.07363  182.17127
2013 05 25 20 00 00      1.08736   23.18947   66.81053  220.02658

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