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 07 09 23 00 00      1.63081   52.25478   37.74522  268.54199
2020 07 10 00 00 00      2.24867   63.70464   26.29536  277.81143
2020 07 10 01 00 00      3.78921   74.90111   15.09889  286.56386
2020 07 10 02 00 00     11.21667   85.49736    4.50264  295.52751
2020 07 10 03 00 00     -1.00000   95.58900   -5.58900  305.26136
2020 07 10 04 00 00     -1.00000  104.29926  -14.29926  316.24913
2020 07 10 05 00 00     -1.00000  111.29882  -21.29882  328.85470
2020 07 10 06 00 00     -1.00000  115.98965  -25.98965  343.13231
2020 07 10 07 00 00     -1.00000  117.82734  -27.82734  358.57673
2020 07 10 08 00 00     -1.00000  116.55671  -26.55671   14.13243
2020 07 10 09 00 00     -1.00000  112.35702  -22.35702   28.68464
2020 07 10 10 00 00     -1.00000  105.73773  -15.73773   41.61168
2020 07 10 11 00 00     -1.00000   97.30166   -7.30166   52.88150
2020 07 10 12 00 00     16.29135   87.31207    2.68793   62.81982
2020 07 10 13 00 00      4.34121   76.91951   13.08049   71.89670
2020 07 10 14 00 00      2.42854   65.80373   24.19627   80.65602
2020 07 10 15 00 00      1.71384   54.38363   35.61637   89.78327
2020 07 10 16 00 00      1.36508   42.96245   47.03755  100.35686
2020 07 10 17 00 00      1.17854   32.01103   57.98897  114.53785
2020 07 10 18 00 00      1.08308   22.65397   67.34603  137.31447
2020 07 10 19 00 00      1.05065   17.93896   72.06104  175.85855
2020 07 10 20 00 00      1.07292   21.31388   68.68612  216.88813
2020 07 10 21 00 00      1.15557   30.13511   59.86489  242.11644
2020 07 10 22 00 00      1.32210   40.91720   49.08280  257.36633
2020 07 10 23 00 00      1.63255   52.30236   37.69764  268.38277

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