Local UTC SolarZen and Elev Uncorrected for Atmospheric Refaction
yyyy MM dd HH:mm AirMass SolarZen Elev Azim
2025 07 16 09:00 -1.00000 113.20886 -23.20886 28.90008
2025 07 16 10:00 -1.00000 106.54355 -16.54355 41.96955
2025 07 16 11:00 -1.00000 98.05321 -8.05321 53.33851
2025 07 16 12:00 19.21939 88.28023 1.71977 63.35134
2025 07 16 13:00 4.55695 77.64468 12.35532 72.49605
2025 07 16 14:00 2.48872 66.46835 23.53165 81.33126
2025 07 16 15:00 1.74001 55.02450 34.97550 90.55518
2025 07 16 16:00 1.37934 43.61223 46.38777 101.25464
2025 07 16 17:00 1.18760 32.71517 57.28483 115.56568
2025 07 16 18:00 1.08962 23.47251 66.52749 138.22749
2025 07 16 19:00 1.05604 18.82736 71.17264 175.55038
2025 07 16 20:00 1.07807 22.01321 67.98679 215.37593
2025 07 16 21:00 1.16145 30.64186 59.35814 240.65451
2025 07 16 22:00 1.33026 41.33592 48.66408 256.15680
2025 07 16 23:00 1.64653 52.69973 37.30027 267.36083
2025 07 17 00:00 2.28352 64.17279 25.82721 276.77254
2025 07 17 01:00 3.90601 75.43673 14.56327 285.61773
2025 07 17 02:00 12.35183 86.22092 3.77908 294.64596
2025 07 17 03:00 -1.00000 96.21856 -6.21856 304.43539
2025 07 17 04:00 -1.00000 105.03298 -15.03298 315.49209
2025 07 17 05:00 -1.00000 112.14557 -22.14557 328.20783
2025 07 17 06:00 -1.00000 116.94072 -26.94072 342.66241
2025 07 17 07:00 -1.00000 118.84959 -28.84959 358.34983
2025 07 17 08:00 -1.00000 117.59934 -27.59934 14.17090
2025 07 17 09:00 -1.00000 113.37208 -23.37208 28.95337
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.