Local UTC SolarZen and Elev Uncorrected for Atmospheric Refaction
yyyy MM dd HH:mm AirMass SolarZen Elev Azim
2025 07 12 16:00 1.36929 43.16704 46.83296 100.60404
2025 07 12 17:00 1.18120 32.22673 57.77327 114.81925
2025 07 12 18:00 1.08496 22.89788 67.10212 137.55466
2025 07 12 19:00 1.05216 18.19620 71.80380 175.72919
2025 07 12 20:00 1.07431 21.51008 68.48992 216.41944
2025 07 12 21:00 1.15710 30.27556 59.72444 241.67928
2025 07 12 22:00 1.32419 41.03531 48.96469 257.00894
2025 07 12 23:00 1.63610 52.41942 37.58058 268.08202
2025 07 13 00:00 2.26046 63.88597 26.11403 277.40706
2025 07 13 01:00 3.82894 75.12503 14.87497 286.19501
2025 07 13 02:00 11.59530 85.86964 4.13036 295.18271
2025 07 13 03:00 -1.00000 95.81489 -5.81489 304.93656
2025 07 13 04:00 -1.00000 104.56651 -14.56651 315.94881
2025 07 13 05:00 -1.00000 111.61138 -21.61138 328.59405
2025 07 13 06:00 -1.00000 116.34490 -26.34490 342.93654
2025 07 13 07:00 -1.00000 118.21331 -28.21331 358.47147
2025 07 13 08:00 -1.00000 116.95435 -26.95435 14.12751
2025 07 13 09:00 -1.00000 112.74780 -22.74780 28.76822
2025 07 13 10:00 -1.00000 106.10985 -16.10985 41.76140
2025 07 13 11:00 -1.00000 97.65075 -7.65075 53.07779
2025 07 13 12:00 17.56223 87.90688 2.09312 63.05121
2025 07 13 13:00 4.43969 77.29499 12.70501 72.15975
2025 07 13 14:00 2.45640 66.13466 23.86534 80.95390
2025 07 13 15:00 1.72601 54.69649 35.30351 90.12482
2025 07 13 16:00 1.37171 43.27486 46.72514 100.75442
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.