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 08 19:00      1.04560   17.06598   72.93402  180.59923
2024 06 08 20:00      1.07317   21.35456   68.64544  221.49988
2024 06 08 21:00      1.16149   30.64520   59.35480  245.29051
2024 06 08 22:00      1.33567   41.60024   48.39976  259.71297
2024 06 08 23:00      1.65907   53.03103   36.96897  270.31283
2024 06 09 00:00      2.30746   64.46386   25.53614  279.39759
2024 06 09 01:00      3.95064   75.61154   14.38846  288.08012
2024 06 09 02:00     12.33110   86.21180    3.78820  297.04887
2024 06 09 03:00     -1.00000   95.95623   -5.95623  306.83939
2024 06 09 04:00     -1.00000  104.44460  -14.44460  317.91074
2024 06 09 05:00     -1.00000  111.16354  -21.16354  330.58653
2024 06 09 06:00     -1.00000  115.52648  -25.52648  344.86033
2024 06 09 07:00     -1.00000  117.02457  -27.02457    0.17192
2024 06 09 08:00     -1.00000  115.45277  -25.45277   15.46910
2024 06 09 09:00     -1.00000  111.02577  -21.02577   29.70702
2024 06 09 10:00     -1.00000  104.25695  -14.25695   42.33995
2024 06 09 11:00     -1.00000   95.73232   -5.73232   53.37234
2024 06 09 12:00     11.78719   85.96253    4.03747   63.13252
2024 06 09 13:00      3.88300   75.34498   14.65502   72.08092
2024 06 09 14:00      2.28459   64.18606   25.81394   80.75426
2024 06 09 15:00      1.64830   52.74696   37.25304   89.84506
2024 06 09 16:00      1.32984   41.31552   48.68448  100.47931
2024 06 09 17:00      1.15822   30.37078   59.62922  115.00678
2024 06 09 18:00      1.07151   21.12604   68.87396  139.09701
2024 06 09 19:00      1.04516   16.98642   73.01358  180.44579

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