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 05 03 04:00     -1.00000  110.68199  -20.68199  314.17164
2024 05 03 05:00     -1.00000  117.90849  -27.90849  327.89613
2024 05 03 06:00     -1.00000  122.62145  -32.62145  343.70826
2024 05 03 07:00     -1.00000  124.15355  -34.15355    0.91189
2024 05 03 08:00     -1.00000  122.24330  -32.24330   18.02309
2024 05 03 09:00     -1.00000  117.21259  -27.21259   33.61551
2024 05 03 10:00     -1.00000  109.75128  -19.75128   47.09681
2024 05 03 11:00     -1.00000  100.57833  -10.57833   58.64778
2024 05 03 12:00     33.11316   90.27124   -0.27124   68.79811
2024 05 03 13:00      5.18803   79.25632   10.74368   78.16357
2024 05 03 14:00      2.63424   67.86132   22.13868   87.40148
2024 05 03 15:00      1.80125   56.38578   33.61422   97.31614
2024 05 03 16:00      1.41715   45.20066   44.79934  109.12784
2024 05 03 17:00      1.21897   34.95005   55.04995  125.02272
2024 05 03 18:00      1.12182   27.01980   62.98020  148.71571
2024 05 03 19:00      1.09422   24.02313   65.97687  181.88063
2024 05 03 20:00      1.12829   27.65903   62.34097  214.31435
2024 05 03 21:00      1.23377   35.92525   54.07475  237.01471
2024 05 03 22:00      1.44551   46.31099   43.68901  252.34711
2024 05 03 23:00      1.85741   57.53839   32.46161  263.89134
2024 05 04 00:00      2.76837   69.00635   20.99365  273.69886
2024 05 04 01:00      5.72828   80.35698    9.64302  282.92744
2024 05 04 02:00     -1.00000   91.29048   -1.29048  292.35658
2024 05 04 03:00     -1.00000  101.47068  -11.47068  302.63452
2024 05 04 04:00     -1.00000  110.45680  -20.45680  314.36809

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