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:
Atmospheric Refraction Correction:

Local UTC     SolarZen and Elev Uncorrected for Atmospheric Refaction
yyyy MM dd HH:mm      AirMass   SolarZen       Elev       Azim
2024 05 06 13:00      4.94278   78.67853   11.32147   77.52409
2024 05 06 14:00      2.57361   67.30157   22.69843   86.70587
2024 05 06 15:00      1.77524   55.82160   34.17840   96.54706
2024 05 06 16:00      1.40252   44.60140   45.39860  108.27112
2024 05 06 17:00      1.20909   34.27281   55.72719  124.11611
2024 05 06 18:00      1.11407   26.22558   63.77442  148.03864
2024 05 06 19:00      1.08720   23.17731   66.82269  182.08072
2024 05 06 20:00      1.12093   26.93066   63.06934  215.26574
2024 05 06 21:00      1.22477   35.33762   54.66238  238.06524
2024 05 06 22:00      1.43243   45.80687   44.19313  253.29383
2024 05 06 23:00      1.83406   57.06956   32.93044  264.72994
2024 05 07 00:00      2.71201   68.53992   21.46008  274.45689
2024 05 07 01:00      5.47564   79.86883   10.13117  283.62891
2024 05 07 02:00     37.85848   90.76067   -0.76067  293.01558
2024 05 07 03:00     -1.00000  100.88166  -10.88166  303.25195
2024 05 07 04:00     -1.00000  109.79440  -19.79440  314.92567
2024 05 07 05:00     -1.00000  116.91396  -26.91396  328.51052
2024 05 07 06:00     -1.00000  121.53543  -31.53543  344.09129
2024 05 07 07:00     -1.00000  123.02248  -33.02248    0.98472
2024 05 07 08:00     -1.00000  121.12998  -31.12998   17.78296
2024 05 07 09:00     -1.00000  116.16582  -26.16582   33.13574
2024 05 07 10:00     -1.00000  108.79078  -18.79078   46.46550
2024 05 07 11:00     -1.00000   99.70102   -9.70102   57.92498
2024 05 07 12:00     26.31876   89.46229    0.53771   68.01087
2024 05 07 13:00      4.86984   78.49557   11.50443   77.31476

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