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 07 26 10:00     -1.00000  108.27451  -18.27451   43.04292
2024 07 26 11:00     -1.00000   99.62943   -9.62943   54.60670
2024 07 26 12:00     28.30870   89.71986    0.28014   64.76287
2024 07 26 13:00      5.06696   78.97799   11.02201   74.04346
2024 07 26 14:00      2.62014   67.73362   22.26638   83.04169
2024 07 26 15:00      1.79587   56.27068   33.72932   92.48571
2024 07 26 16:00      1.40998   44.90899   45.09101  103.48428
2024 07 26 17:00      1.20765   34.17188   55.82812  118.12608
2024 07 26 18:00      1.10491   25.24100   64.75900  140.64672
2024 07 26 19:00      1.06961   20.85962   69.14038  175.65293
2024 07 26 20:00      1.09216   23.77940   66.22060  212.77617
2024 07 26 21:00      1.17865   32.02946   57.97054  237.78534
2024 07 26 22:00      1.35508   42.51975   47.48025  253.67078
2024 07 26 23:00      1.68960   53.81131   36.18869  265.22303
2024 07 27 00:00      2.37891   65.29406   24.70594  274.88218
2024 07 27 01:00      4.23093   76.62432   13.37568  283.89993
2024 07 27 02:00     16.07260   87.51957    2.48043  293.05854
2024 07 27 03:00     -1.00000   97.66608   -7.66608  302.97096
2024 07 27 04:00     -1.00000  106.65824  -16.65824  314.18678
2024 07 27 05:00     -1.00000  113.95814  -23.95814  327.15274
2024 07 27 06:00     -1.00000  118.91324  -28.91324  341.99595
2024 07 27 07:00     -1.00000  120.90626  -30.90626  358.19800
2024 07 27 08:00     -1.00000  119.63458  -29.63458   14.55679
2024 07 27 09:00     -1.00000  115.29551  -25.29551   29.77990
2024 07 27 10:00     -1.00000  108.46204  -18.46204   43.17817

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