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
2020 09 19 20 00 00      1.33928   41.76038   48.23962  205.43423
2020 09 19 21 00 00      1.50382   48.38918   41.61082  224.51955
2020 09 19 22 00 00      1.85502   57.46610   32.53390  239.53622
2020 09 19 23 00 00      2.64583   67.92587   22.07413  251.65379
2020 09 20 00 00 00      5.14462   79.07776   10.92224  262.08971
2020 09 20 01 00 00     36.58459   89.90830    0.09170  271.80865
2020 09 20 02 00 00     -1.00000  102.04441  -12.04441  281.62248
2020 09 20 03 00 00     -1.00000  113.03813  -23.03813  292.35033
2020 09 20 04 00 00     -1.00000  123.13492  -33.13492  304.96267
2020 09 20 05 00 00     -1.00000  131.59815  -41.59815  320.60499
2020 09 20 06 00 00     -1.00000  137.32641  -47.32641  340.10991
2020 09 20 07 00 00     -1.00000  139.08978  -49.08978    2.54917
2020 09 20 08 00 00     -1.00000  136.38939  -46.38939   24.57668
2020 09 20 09 00 00     -1.00000  129.96521  -39.96521   43.24175
2020 09 20 10 00 00     -1.00000  121.07471  -31.07471   58.14064
2020 09 20 11 00 00     -1.00000  110.74182  -20.74182   70.26479
2020 09 20 12 00 00     -1.00000   99.63588   -9.63588   80.73678
2020 09 20 13 00 00     18.84279   87.88604    2.11396   90.48618
2020 09 20 14 00 00      4.27798   76.71505   13.28495  100.31821
2020 09 20 15 00 00      2.41906   65.70169   24.29831  111.06438
2020 09 20 16 00 00      1.76287   55.52303   34.47697  123.73575
2020 09 20 17 00 00      1.46279   46.93996   43.06004  139.57097
2020 09 20 18 00 00      1.32583   41.10323   48.89677  159.54026
2020 09 20 19 00 00      1.29168   39.33043   50.66957  182.70343
2020 09 20 20 00 00      1.34760   42.15623   47.84377  205.36870

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