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 06 06 01:00      4.02194   75.88272   14.11728  287.94078
2024 06 06 02:00     12.99799   86.49215    3.50785  296.93569
2024 06 06 03:00     -1.00000   96.24639   -6.24639  306.75684
2024 06 06 04:00     -1.00000  104.74263  -14.74263  317.86826
2024 06 06 05:00     -1.00000  111.46351  -21.46351  330.59790
2024 06 06 06:00     -1.00000  115.81743  -25.81743  344.93900
2024 06 06 07:00     -1.00000  117.29195  -27.29195    0.32174
2024 06 06 08:00     -1.00000  115.68349  -25.68349   15.67831
2024 06 06 09:00     -1.00000  111.21330  -21.21330   29.95443
2024 06 06 10:00     -1.00000  104.40205  -14.40205   42.60704
2024 06 06 11:00     -1.00000   95.84029   -5.84029   53.64934
2024 06 06 12:00     11.95248   86.04041    3.95959   63.41805
2024 06 06 13:00      3.89682   75.40019   14.59981   72.37999
2024 06 06 14:00      2.28788   64.22630   25.77370   81.07762
2024 06 06 15:00      1.64959   52.78124   37.21876   90.21083
2024 06 06 16:00      1.33068   41.35662   48.64338  100.91782
2024 06 06 17:00      1.15906   30.44148   59.55852  115.56621
2024 06 06 18:00      1.07256   21.27137   68.72863  139.79469
2024 06 06 19:00      1.04661   17.24551   72.75449  180.89189
2024 06 06 20:00      1.07462   21.55181   68.44819  221.43360
2024 06 06 21:00      1.16369   30.82836   59.17164  245.14195
2024 06 06 22:00      1.33928   41.77443   48.22557  259.57204
2024 06 06 23:00      1.66566   53.20269   36.79731  270.19110
2024 06 07 00:00      2.32198   64.63713   25.36287  279.29405
2024 06 07 01:00      3.99701   75.78901   14.21099  287.99325

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