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 02 03:00     -1.00000  101.87151  -11.87151  302.19742
2024 05 02 04:00     -1.00000  110.90923  -20.90923  313.96992
2024 05 02 05:00     -1.00000  118.16435  -28.16435  327.72954
2024 05 02 06:00     -1.00000  122.90236  -32.90236  343.60144
2024 05 02 07:00     -1.00000  124.44754  -34.44754    0.88661
2024 05 02 08:00     -1.00000  122.53379  -32.53379   18.08073
2024 05 02 09:00     -1.00000  117.48659  -27.48659   33.73662
2024 05 02 10:00     -1.00000  110.00349  -20.00349   47.25782
2024 05 02 11:00     -1.00000  100.80951  -10.80951   58.83260
2024 05 02 12:00     35.14799   90.48524   -0.48524   68.99941
2024 05 02 13:00      5.27956   79.45836   10.54164   78.38033
2024 05 02 14:00      2.65624   68.05761   21.94239   87.63676
2024 05 02 15:00      1.81062   56.58399   33.41601   97.57532
2024 05 02 16:00      1.42240   45.41117   44.58883  109.41461
2024 05 02 17:00      1.22250   35.18703   54.81297  125.32215
2024 05 02 18:00      1.12458   27.29527   62.70473  148.93217
2024 05 02 19:00      1.09671   24.31396   65.68604  181.80517
2024 05 02 20:00      1.13088   27.90920   62.09080  213.99015
2024 05 02 21:00      1.23692   36.12677   53.87323  236.65522
2024 05 02 22:00      1.45005   46.48315   43.51685  252.02158
2024 05 02 23:00      1.86550   57.69777   32.30223  263.60203
2024 05 03 00:00      2.78804   69.16439   20.83561  273.43661
2024 05 03 01:00      5.81899   80.52213    9.47787  282.68406
2024 05 03 02:00     -1.00000   91.46975   -1.46975  292.12711
2024 05 03 03:00     -1.00000  101.67033  -11.67033  302.41848

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