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
2019 09 19 04 00 00     -1.00000  122.50543  -32.50543  305.32617
2019 09 19 05 00 00     -1.00000  130.92586  -40.92586  320.86315
2019 09 19 06 00 00     -1.00000  136.62715  -46.62715  340.14909
2019 09 19 07 00 00     -1.00000  138.41305  -48.41305    2.27886
2019 09 19 08 00 00     -1.00000  135.79136  -45.79136   24.05254
2019 09 19 09 00 00     -1.00000  129.46479  -39.46479   42.60569
2019 09 19 10 00 00     -1.00000  120.65667  -30.65667   57.48668
2019 09 19 11 00 00     -1.00000  110.38059  -20.38059   69.62448
2019 09 19 12 00 00     -1.00000   99.30690   -9.30690   80.11041
2019 09 19 13 00 00     17.45629   87.59238    2.40762   89.86264
2019 09 19 14 00 00      4.18022   76.38667   13.61333   99.68360
2019 09 19 15 00 00      2.38594   65.33816   24.66184  110.40760
2019 09 19 16 00 00      1.74421   55.09870   34.90130  123.05908
2019 09 19 17 00 00      1.44902   46.42738   43.57262  138.91616
2019 09 19 18 00 00      1.31365   40.48886   49.51114  159.02731
2019 09 19 19 00 00      1.27923   38.64318   51.35682  182.49324
2019 09 19 20 00 00      1.33309   41.46064   48.53936  205.48443
2019 09 19 21 00 00      1.49552   48.10519   41.89481  224.65556
2019 09 19 22 00 00      1.84176   57.20115   32.79885  239.70719
2019 09 19 23 00 00      2.61803   67.67561   22.32439  251.83509
2019 09 20 00 00 00      5.04051   78.83687   11.16313  262.27258
2019 09 20 01 00 00     34.24707   89.73669    0.26331  271.99070
2019 09 20 02 00 00     -1.00000  101.79942  -11.79942  281.80264
2019 09 20 03 00 00     -1.00000  112.78276  -22.78276  292.52501
2019 09 20 04 00 00     -1.00000  122.86359  -32.86359  305.12033

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