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
2022 12 08 12 00 00     -1.00000  114.01597  -24.01597  100.28303
2022 12 08 13 00 00     -1.00000  102.91447  -12.91447  108.98666
2022 12 08 14 00 00     -1.00000   92.39079   -2.39079  118.04403
2022 12 08 15 00 00      7.39627   82.64615    7.35385  127.98366
2022 12 08 16 00 00      3.67145   74.39039   15.60961  139.25822
2022 12 08 17 00 00      2.64634   67.93039   22.06961  152.16848
2022 12 08 18 00 00      2.26344   63.89095   26.10905  166.65263
2022 12 08 19 00 00      2.17733   62.76460   27.23540  182.07371
2022 12 08 20 00 00      2.33092   64.70893   25.29107  197.33765
2022 12 08 21 00 00      2.83086   69.45785   20.54215  211.43283
2022 12 08 22 00 00      4.20334   76.46575   13.53425  223.88571
2022 12 08 23 00 00     10.44350   85.08039    4.91961  234.75760
2022 12 09 00 00 00     -1.00000   95.15367   -5.15367  244.40540
2022 12 09 01 00 00     -1.00000  105.86216  -15.86216  253.30306
2022 12 09 02 00 00     -1.00000  117.07483  -27.07483  262.00253
2022 12 09 03 00 00     -1.00000  128.53090  -38.53090  271.23186
2022 12 09 04 00 00     -1.00000  139.92917  -49.92917  282.20992
2022 12 09 05 00 00     -1.00000  150.73923  -60.73923  297.53672
2022 12 09 06 00 00     -1.00000  159.57152  -69.57152  323.39119
2022 12 09 07 00 00     -1.00000  162.73870  -72.73870    6.05093
2022 12 09 08 00 00     -1.00000  157.63106  -67.63106   44.88484
2022 12 09 09 00 00     -1.00000  148.05374  -58.05374   67.13313
2022 12 09 10 00 00     -1.00000  137.01515  -47.01515   80.94156
2022 12 09 11 00 00     -1.00000  125.56980  -35.56980   91.30112
2022 12 09 12 00 00     -1.00000  114.15680  -24.15680  100.30765

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