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:
Atmospheric Refraction Correction:

Local UTC     SolarZen and Elev Uncorrected for Atmospheric Refaction
yyyy MM dd HH:mm      AirMass   SolarZen       Elev       Azim
2024 05 04 02:00     -1.00000   91.29048   -1.29048  292.35658
2024 05 04 03:00     -1.00000  101.47068  -11.47068  302.63452
2024 05 04 04:00     -1.00000  110.45680  -20.45680  314.36809
2024 05 04 05:00     -1.00000  117.65543  -27.65543  328.05752
2024 05 04 06:00     -1.00000  122.34421  -32.34421  343.81063
2024 05 04 07:00     -1.00000  123.86396  -33.86396    0.93432
2024 05 04 08:00     -1.00000  121.95759  -31.95759   17.96448
2024 05 04 09:00     -1.00000  116.94344  -26.94344   33.49485
2024 05 04 10:00     -1.00000  109.50383  -19.50383   46.93705
2024 05 04 11:00     -1.00000  100.35182  -10.35182   58.46457
2024 05 04 12:00     31.20687   90.06189   -0.06189   68.59855
2024 05 04 13:00      5.10160   79.05896   10.94104   77.94857
2024 05 04 14:00      2.61316   67.66984   22.33016   87.16784
2024 05 04 15:00      1.79224   56.19261   33.80739   97.05829
2024 05 04 16:00      1.41209   44.99550   45.00450  108.84156
2024 05 04 17:00      1.21556   34.71863   55.28137  124.72179
2024 05 04 18:00      1.11915   26.74963   63.25037  148.49460
2024 05 04 19:00      1.09181   23.73669   66.26331  181.95184
2024 05 04 20:00      1.12577   27.41252   62.58748  214.63522
2024 05 04 21:00      1.23070   35.72654   54.27346  237.36969
2024 05 04 22:00      1.44106   46.14089   43.85911  252.66777
2024 05 04 23:00      1.84947   57.38055   32.61945  264.17584
2024 05 05 00:00      2.74915   68.84958   21.15042  273.95638
2024 05 05 01:00      5.64092   80.19302    9.80698  283.16610
2024 05 05 02:00     -1.00000   91.11251   -1.11251  292.58119

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