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 29 13:00      4.05426   76.00245   13.99755   71.31737
2024 06 29 14:00      2.34300   64.88386   25.11614   79.97849
2024 06 29 15:00      1.67577   53.46234   36.53766   88.99354
2024 06 29 16:00      1.34439   42.01885   47.98115   99.43836
2024 06 29 17:00      1.16584   31.00543   58.99457  113.52884
2024 06 29 18:00      1.07455   21.54191   68.45809  136.64300
2024 06 29 19:00      1.04443   16.85570   73.14430  177.09482
2024 06 29 20:00      1.06790   20.61793   69.38207  219.44065
2024 06 29 21:00      1.15085   29.73643   60.26357  244.28066
2024 06 29 22:00      1.31647   40.64647   49.35353  259.08327
2024 06 29 23:00      1.62336   52.07045   37.92955  269.81532
2024 06 30 00:00      2.23134   63.51434   26.48566  278.93250
2024 06 30 01:00      3.72585   74.68766   15.31234  287.59441
2024 06 30 02:00     10.58459   85.33078    4.66922  296.50380
2024 06 30 03:00     -1.00000   95.14146   -5.14146  306.19950
2024 06 30 04:00     -1.00000  103.72863  -13.72863  317.14286
2024 06 30 05:00     -1.00000  110.58886  -20.58886  329.66897
2024 06 30 06:00     -1.00000  115.14017  -25.14017  343.80258
2024 06 30 07:00     -1.00000  116.86319  -26.86319  359.03055
2024 06 30 08:00     -1.00000  115.52476  -25.52476   14.33163
2024 06 30 09:00     -1.00000  111.30792  -21.30792   28.64654
2024 06 30 10:00     -1.00000  104.70837  -14.70837   41.38659
2024 06 30 11:00     -1.00000   96.31056   -6.31056   52.51923
2024 06 30 12:00     13.35382   86.63167    3.36833   62.35321
2024 06 30 13:00      4.07454   76.07659   13.92341   71.33985

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