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
2021 03 01 15 00 00      3.75434   74.75329   15.24671  113.62413
2021 03 01 16 00 00      2.33571   64.76507   25.23493  125.37446
2021 03 01 17 00 00      1.79679   56.26645   33.73355  139.42657
2021 03 01 18 00 00      1.55766   50.13153   39.86847  156.39303
2021 03 01 19 00 00      1.47403   47.34832   42.65168  175.87996
2021 03 01 20 00 00      1.50765   48.51872   41.48128  195.90431
2021 03 01 21 00 00      1.67317   53.37454   36.62546  214.05836
2021 03 01 22 00 00      2.05686   61.00853   28.99147  229.28645
2021 03 01 23 00 00      2.96816   70.46377   19.53623  241.90188
2021 03 02 00 00 00      6.15553   80.99660    9.00340  252.71338
2021 03 02 01 00 00     -1.00000   92.29670   -2.29670  262.54348
2021 03 02 02 00 00     -1.00000  103.75299  -13.75299  272.15640
2021 03 02 03 00 00     -1.00000  115.13013  -25.13013  282.35847
2021 03 02 04 00 00     -1.00000  126.02476  -36.02476  294.18110
2021 03 02 05 00 00     -1.00000  135.80385  -45.80385  309.10925
2021 03 02 06 00 00     -1.00000  143.35483  -53.35483  329.02720
2021 03 02 07 00 00     -1.00000  146.97869  -56.97869  354.47758
2021 03 02 08 00 00     -1.00000  145.37028  -55.37028   21.23966
2021 03 02 09 00 00     -1.00000  139.15820  -49.15820   43.49963
2021 03 02 10 00 00     -1.00000  130.09095  -40.09095   60.18877
2021 03 02 11 00 00     -1.00000  119.53471  -29.53471   73.03036
2021 03 02 12 00 00     -1.00000  108.27898  -18.27898   83.72146
2021 03 02 13 00 00     -1.00000   96.79357   -6.79357   93.44770
2021 03 02 14 00 00     10.74593   85.25017    4.74983  103.07908
2021 03 02 15 00 00      3.68462   74.44918   15.55082  113.38041

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