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 12 11 09 00 00     -1.00000  148.29312  -58.29312   67.13925
2019 12 11 10 00 00     -1.00000  137.25304  -47.25304   80.97739
2019 12 11 11 00 00     -1.00000  125.80700  -35.80700   91.33577
2019 12 11 12 00 00     -1.00000  114.39437  -24.39437  100.33188
2019 12 11 13 00 00     -1.00000  103.29432  -13.29432  109.01082
2019 12 11 14 00 00     -1.00000   92.77086   -2.77086  118.03616
2019 12 11 15 00 00      7.74462   83.01683    6.98317  127.93341
2019 12 11 16 00 00      3.75454   74.75414   15.24586  139.15167
2019 12 11 17 00 00      2.68520   68.27073   21.72927  151.99067
2019 12 11 18 00 00      2.28760   64.19001   25.80999  166.39544
2019 12 11 19 00 00      2.19505   63.00443   26.99557  181.74586
2019 12 11 20 00 00      2.34546   64.87845   25.12155  196.96503
2019 12 11 21 00 00      2.84377   69.55685   20.44315  211.04451
2019 12 11 22 00 00      4.21418   76.50249   13.49751  223.50024
2019 12 11 23 00 00     10.42044   85.06707    4.93293  234.38027
2019 12 12 00 00 00     -1.00000   95.10111   -5.10111  244.03174
2019 12 12 01 00 00     -1.00000  105.78157  -15.78157  252.92194
2019 12 12 02 00 00     -1.00000  116.97660  -26.97660  261.59625
2019 12 12 03 00 00     -1.00000  128.42665  -38.42665  270.77226
2019 12 12 04 00 00     -1.00000  139.83561  -49.83561  281.64769
2019 12 12 05 00 00     -1.00000  150.68807  -60.68807  296.77988
2019 12 12 06 00 00     -1.00000  159.63383  -69.63383  322.33505
2019 12 12 07 00 00     -1.00000  162.99909  -72.99909    5.14465
2019 12 12 08 00 00     -1.00000  157.99147  -67.99147   44.63571
2019 12 12 09 00 00     -1.00000  148.42580  -58.42580   67.12614

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