Local UTC SolarZen and Elev Uncorrected for Atmospheric Refaction
yyyy MM dd HH:mm
2025 04 25 10:00
2025 04 25 11:00
2025 04 25 12:00
2025 04 25 13:00
2025 04 25 14:00
2025 04 25 15:00
2025 04 25 16:00
2025 04 25 17:00
2025 04 25 18:00
2025 04 25 19:00
2025 04 25 20:00
2025 04 25 21:00
2025 04 25 22:00
2025 04 25 23:00
2025 04 26 00:00
2025 04 26 01:00
2025 04 26 02:00
2025 04 26 03:00
2025 04 26 04:00
2025 04 26 05:00
2025 04 26 06:00
2025 04 26 07:00
2025 04 26 08:00
2025 04 26 09:00
2025 04 26 10:00
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.