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:

Local Etc/GMT
yyyy MM dd HH mm ss      AirMass   SolarZen       Elev       Azim
2020 08 12 15 00 00      1.91787   58.66352   31.33648   97.04657
2020 08 12 16 00 00      1.47787   47.48608   42.51392  108.65803
2020 08 12 17 00 00      1.25429   37.19125   52.80875  123.94700
2020 08 12 18 00 00      1.14305   29.03346   60.96654  146.15280
2020 08 12 19 00 00      1.10612   25.36638   64.63362  177.22689
2020 08 12 20 00 00      1.13267   28.07154   61.92846  209.30166
2020 08 12 21 00 00      1.23045   35.69912   54.30088  232.94037
2020 08 12 22 00 00      1.43185   45.76778   44.23222  249.08396
2020 08 12 23 00 00      1.82529   56.86532   33.13468  261.11647
2020 08 13 00 00 00      2.68979   68.31030   21.68970  271.18120
2020 08 13 01 00 00      5.43079   79.69258   10.30742  280.51123
2020 08 13 02 00 00     -1.00000   90.86420   -0.86420  289.92941
2020 08 13 03 00 00     -1.00000  101.28066  -11.28066  300.11386
2020 08 13 04 00 00     -1.00000  110.59914  -20.59914  311.71026
2020 08 13 05 00 00     -1.00000  118.23425  -28.23425  325.29512
2020 08 13 06 00 00     -1.00000  123.44284  -33.44284  341.10568
2020 08 13 07 00 00     -1.00000  125.49239  -35.49239  358.56677
2020 08 13 08 00 00     -1.00000  124.02406  -34.02406   16.17621
2020 08 13 09 00 00     -1.00000  119.29999  -29.29999   32.33554
2020 08 13 10 00 00     -1.00000  112.01844  -22.01844   46.29948
2020 08 13 11 00 00     -1.00000  102.93923  -12.93923   58.20370
2020 08 13 12 00 00     -1.00000   92.67770   -2.67770   68.59552
2020 08 13 13 00 00      6.54659   81.58224    8.41776   78.11833
2020 08 13 14 00 00      2.93933   70.26077   19.73923   87.44320
2020 08 13 15 00 00      1.92637   58.81825   31.18175   97.35929

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