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 07 14:00      2.28640   64.20821   25.79179   80.96437
2024 06 07 15:00      1.64898   52.76518   37.23482   90.08262
2024 06 07 16:00      1.33030   41.33810   48.66190  100.76429
2024 06 07 17:00      1.15872   30.41253   59.58747  115.37130
2024 06 07 18:00      1.07217   21.21647   68.78353  139.55536
2024 06 07 19:00      1.04608   17.15236   72.84764  180.74805
2024 06 07 20:00      1.07387   21.45065   68.54935  221.47271
2024 06 07 21:00      1.16257   30.73493   59.26507  245.22158
2024 06 07 22:00      1.33744   41.68578   48.31422  259.64690
2024 06 07 23:00      1.66230   53.11538   36.88462  270.25570
2024 06 08 00:00      2.31456   64.54896   25.45104  279.34912
2024 06 08 01:00      3.97325   75.69859   14.30141  288.03969
2024 06 08 02:00     12.53775   86.30148    3.69852  297.01674
2024 06 08 03:00     -1.00000   96.04860   -6.04860  306.81708
2024 06 08 04:00     -1.00000  104.53893  -14.53893  317.90126
2024 06 08 05:00     -1.00000  111.25782  -21.25782  330.59418
2024 06 08 06:00     -1.00000  115.61715  -25.61715  344.88915
2024 06 08 07:00     -1.00000  117.10703  -27.10703    0.22282
2024 06 08 08:00     -1.00000  115.52299  -25.52299   15.53811
2024 06 08 09:00     -1.00000  111.08185  -21.08185   29.78737
2024 06 08 10:00     -1.00000  104.29928  -14.29928   42.42587
2024 06 08 11:00     -1.00000   95.76273   -5.76273   53.46086
2024 06 08 12:00     11.83088   85.98331    4.01669   63.22334
2024 06 08 13:00      3.88638   75.35852   14.64148   72.17573
2024 06 08 14:00      2.28531   64.19481   25.80519   80.85655

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