Introduction & principle
Uses standard NOAA solar position equations and a simplified lunar position model. Inputs are latitude, longitude, date, and time; outputs are altitude, azimuth, and approximate moon illumination.
All toolsAtmospheric Observation
Sun & Moon Angle Calculator
Compute solar altitude, azimuth, and moonlight angle for any place and time.
Live tool
Sun
Altitude -37.7° · Azimuth 329°
Moon (approx.)
Below horizon
Tool advantage
Built specifically for atmospheric optics observers, with the same inputs the rainbow and halo tools use.
Detailed usage guide
- 1Enter location and a date-time (defaults to now).
- 2Read solar altitude and azimuth.
- 3Switch to the Moon tab for lunar altitude and approximate phase fraction.
Common problems & FAQ
Why does the Moon panel show 'below horizon'?
The Moon is not visible from your location at the chosen time.
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