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
2017 07 20 21 00 00      1.16700   31.09042   58.90958  239.59073
2017 07 20 22 00 00      1.33819   41.70777   48.29223  255.25165
2017 07 20 23 00 00      1.66024   53.04056   36.95944  266.58831
2017 07 21 00 00 00      2.31381   64.50653   25.49347  276.09144
2017 07 21 01 00 00      4.00764   75.76732   14.23268  284.99907
2017 07 21 02 00 00     13.41343   86.43646    3.56354  294.07341
2017 07 21 03 00 00     -1.00000   96.70672   -6.70672  303.90525
2017 07 21 04 00 00     -1.00000  105.58638  -15.58638  315.01598
2017 07 21 05 00 00     -1.00000  112.76821  -22.76821  327.81652
2017 07 21 06 00 00     -1.00000  117.62393  -27.62393  342.40331
2017 07 21 07 00 00     -1.00000  119.56787  -29.56787  358.26709
2017 07 21 08 00 00     -1.00000  118.31633  -28.31633   14.27474
2017 07 21 09 00 00     -1.00000  114.05568  -24.05568   29.21304
2017 07 21 10 00 00     -1.00000  107.32891  -17.32891   42.41867
2017 07 21 11 00 00     -1.00000   98.77288   -8.77288   53.87870
2017 07 21 12 00 00     22.79803   88.55184    1.44816   63.95913
2017 07 21 13 00 00      4.77846   78.18424   11.81576   73.16722
2017 07 21 14 00 00      2.54748   67.01402   22.98598   82.07705
2017 07 21 15 00 00      1.76518   55.57481   34.42519   91.40031
2017 07 21 16 00 00      1.39312   44.19070   45.80930  102.23387
2017 07 21 17 00 00      1.19653   33.36670   56.63330  116.69286
2017 07 21 18 00 00      1.09632   24.26218   65.73782  139.28525
2017 07 21 19 00 00      1.06188   19.72725   70.27275  175.51408
2017 07 21 20 00 00      1.08402   22.77379   67.22621  214.10706
2017 07 21 21 00 00      1.16861   31.22155   58.77845  239.31080

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