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 04 22 20:00      1.16101   30.60513   59.39487  210.62394
2024 04 22 21:00      1.27288   38.29597   51.70403  232.86369
2024 04 22 22:00      1.50119   48.31750   41.68250  248.53542
2024 04 22 23:00      1.95611   59.37444   30.62556  260.47228
2024 04 23 00:00      3.01190   70.80962   19.19038  270.57701
2024 04 23 01:00      6.95176   82.23089    7.76911  280.00894
2024 04 23 02:00     -1.00000   93.32225   -3.32225  289.58074
2024 04 23 03:00     -1.00000  103.74001  -13.74001  299.99045
2024 04 23 04:00     -1.00000  113.03322  -23.03322  311.92316
2024 04 23 05:00     -1.00000  120.57788  -30.57788  325.99674
2024 04 23 06:00     -1.00000  125.57992  -35.57992  342.43675
2024 04 23 07:00     -1.00000  127.27645  -37.27645    0.52787
2024 04 23 08:00     -1.00000  125.34866  -35.34866   18.55540
2024 04 23 09:00     -1.00000  120.15550  -30.15550   34.84730
2024 04 23 10:00     -1.00000  112.47280  -22.47280   48.76133
2024 04 23 11:00     -1.00000  103.08640  -13.08640   60.56373
2024 04 23 12:00     -1.00000   92.60725   -2.60725   70.88181
2024 04 23 13:00      6.40297   81.47610    8.52390   80.39914
2024 04 23 14:00      2.90134   70.03053   19.96947   89.81401
2024 04 23 15:00      1.91217   58.58470   31.41530   99.94900
2024 04 23 16:00      1.47876   47.53510   42.46490  111.99449
2024 04 23 17:00      1.26020   37.55724   52.44276  127.92585
2024 04 23 18:00      1.15385   29.99663   60.00337  150.67096
2024 04 23 19:00      1.12278   27.11589   62.88411  180.96944
2024 04 23 20:00      1.15763   30.32022   59.67978  210.96681

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