Sun Path: Lévis, Canada

Direct answer

For Lévis at 46.8033, -71.1779, the declination-only solar-noon altitude is approximately 66.6° at the June solstice, 43.2° at an equinox and 19.8° at the December solstice. Refine these geometry checks with the project date, civil time, facade azimuth, terrain and local horizon. The reproducible location record is GeoNames ID 6325521 in administrative area 10, at 46.8033, -71.1779; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 66.6° at the June solstice, 43.2° at an equinox and 19.8° at the December solstice. Representative 21st-day geometry ranges from about 8.3 hours in December to 15.7 hours in June; this excludes atmospheric refraction, terrain and obstruction effects. The cited national authority is a discovery starting point; current local documents and a named qualified reviewer control project use of this sun path record.

Prepared by Harth · Prepared from the cited location and country sources; local project inputs remain unreviewed · Published 2026-08-26 · Updated 2026-08-31.

What must be verified for Lévis?

Lévis is represented here at approximately 46.8033, -71.1779 for discovery and workflow planning. A project address, parcel, elevation, exposure, authority, and submission date must replace that city-centre reference before design use.

How should sun path be established?

1. Fix the surveyed site and local time basis.
2. Select an authoritative weather source or a named solar-position algorithm.
3. Record period, percentile or scenario and units.
4. Test sensitivity to elevation, exposure, urban form and horizon.
5. Save the source file, retrieval date and checker in the model record.

What are the limits of this worksheet?

This sun-path-workflow page is a project-starting worksheet, not a design value or approval. The controlling authority and qualified professionals for the Lévis site remain authoritative.

Lévis monthly solar geometry check for sun path

Lévis solar-geometry fingerprint at 46.8033, -71.1779

• Lévis, 21 January: declination -20.14°, noon altitude 23.06°, zenith 66.94°, geometric daylight 8.935 hours, and vertical-object noon shadow ratio 2.349.
• Lévis, 21 February: declination -11.23°, noon altitude 31.97°, zenith 58.03°, geometric daylight 10.373 hours, and vertical-object noon shadow ratio 1.602.
• Lévis, 21 March: declination -0.40°, noon altitude 42.79°, zenith 47.21°, geometric daylight 11.943 hours, and vertical-object noon shadow ratio 1.080.
• Lévis, 21 April: declination +11.58°, noon altitude 54.78°, zenith 35.22°, geometric daylight 13.681 hours, and vertical-object noon shadow ratio 0.706.
• Lévis, 21 May: declination +20.14°, noon altitude 63.33°, zenith 26.67°, geometric daylight 15.065 hours, and vertical-object noon shadow ratio 0.502.
• Lévis, 21 June: declination +23.45°, noon altitude 66.65°, zenith 23.35°, geometric daylight 15.669 hours, and vertical-object noon shadow ratio 0.432.
• Lévis, 21 July: declination +20.44°, noon altitude 63.64°, zenith 26.36°, geometric daylight 15.118 hours, and vertical-object noon shadow ratio 0.496.
• Lévis, 21 August: declination +11.75°, noon altitude 54.95°, zenith 35.05°, geometric daylight 13.707 hours, and vertical-object noon shadow ratio 0.701.
• Lévis, 21 September: declination -0.20°, noon altitude 42.99°, zenith 47.01°, geometric daylight 11.971 hours, and vertical-object noon shadow ratio 1.073.
• Lévis, 21 October: declination -11.75°, noon altitude 31.44°, zenith 58.56°, geometric daylight 10.293 hours, and vertical-object noon shadow ratio 1.636.
• Lévis, 21 November: declination -20.44°, noon altitude 22.76°, zenith 67.24°, geometric daylight 8.882 hours, and vertical-object noon shadow ratio 2.384.
• Lévis, 21 December: declination -23.45°, noon altitude 19.75°, zenith 70.25°, geometric daylight 8.331 hours, and vertical-object noon shadow ratio 2.786.

Harth computed the Lévis fingerprint for latitude 46.8033° with the Cooper declination approximation, 90° - |latitude - declination| at solar noon, centre-to-centre sunrise hour angle and 1 / tan(altitude) shadow ratio. Longitude -71.1779° is retained for a later civil-time conversion; this screen does not perform that conversion. See NOAA's solar calculation details. Atmospheric refraction, terrain, facade azimuth and obstructions remain outside this first-pass comparison.

Where can you explore related guidance?

• Explore all solar data guidance
• Sun Path: Québec, Canada
• Sun Path: Trois-Rivières, Canada
• Sun Path: Saguenay, Canada
• Sun Path: Longueuil, Canada
• All solar & daylight data guidance for Canada
• Climate Design Data: Lévis, Canada

Sources and method

Location data from the GeoNames CA dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 6325521). Regulatory starting point: Codes Canada and the applicable provincial or territorial authority. Figures are illustrative — verify against the current locally adopted edition for the site. Solar-method context: NOAA Solar Calculation Details; the Harth monthly table uses a simpler declination and geometric-daylight approximation whose stated limitations must be retained.

Source links

• download.geonames.org

• nrc.canada.ca

• gml.noaa.gov