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 10 20:00      1.07189   21.17777   68.82223  221.51822
2024 06 10 21:00      1.15948   30.47711   59.52289  245.39611
2024 06 10 22:00      1.33235   41.43875   48.56125  259.81862
2024 06 10 23:00      1.65300   52.87149   37.12851  270.40467
2024 06 11 00:00      2.29417   64.30315   25.69685  279.47477
2024 06 11 01:00      3.90881   75.44780   14.55220  288.14299
2024 06 11 02:00     11.96054   86.04416    3.95584  297.09648
2024 06 11 03:00     -1.00000   95.78488   -5.78488  306.86864
2024 06 11 04:00     -1.00000  104.27131  -14.27131  317.91595
2024 06 11 05:00     -1.00000  110.99240  -20.99240  330.56002
2024 06 11 06:00     -1.00000  115.36430  -25.36430  344.79532
2024 06 11 07:00     -1.00000  116.87980  -26.87980    0.06764
2024 06 11 08:00     -1.00000  115.33249  -25.33249   15.33362
2024 06 11 09:00     -1.00000  110.93293  -20.93293   29.55302
2024 06 11 10:00     -1.00000  104.19027  -14.19027   42.17782
2024 06 11 11:00     -1.00000   95.68812   -5.68812   53.20707
2024 06 11 12:00     11.73248   85.93632    4.06368   62.96428
2024 06 11 13:00      3.87983   75.33224   14.66776   71.90630
2024 06 11 14:00      2.28428   64.18222   25.81778   80.56660
2024 06 11 15:00      1.64829   52.74681   37.25319   89.63331
2024 06 11 16:00      1.32976   41.31170   48.68830  100.22474
2024 06 11 17:00      1.15798   30.35008   59.64992  114.67758
2024 06 11 18:00      1.07104   21.06111   68.93889  138.66878
2024 06 11 19:00      1.04439   16.84787   73.15213  180.12656
2024 06 11 20:00      1.07130   21.09722   68.90278  221.50937

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