Solar Shading Design: Richmond Hill, Canada

Direct answer

For Richmond Hill at 43.8711, -79.4373, the declination-only solar-noon altitude is approximately 69.6° at the June solstice, 46.1° at an equinox and 22.7° 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 6122091 in administrative area 08, at 43.8711, -79.4373; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 69.6° at the June solstice, 46.1° at an equinox and 22.7° at the December solstice. Representative 21st-day geometry ranges from about 8.7 hours in December to 15.3 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 solar shading design record.

Prepared by Harth · Topic-specific calculated asset and fresh SERP brief passed editorial screening; page remains noindex pending the independent content, evidence, similarity and link gates · Published 2026-08-26 · Updated 2026-09-02.

What must be verified for Richmond Hill?

Richmond Hill is represented here at approximately 43.8711, -79.4373 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 solar shading design 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 shading-workflow page is a project-starting worksheet, not a design value or approval. The controlling authority and qualified professionals for the Richmond Hill site remain authoritative.

Richmond Hill horizontal-overhang screening worksheet

Richmond Hill overhang sizing hand check

P:H is projection depth divided by the vertical facade distance to shade, calculated as 1 / tan(solar altitude). For a 1.20 m vertical target, multiply the table ratio by 1.20 m. The 09:00 and 15:00 columns use apparent solar time and show the solar-profile-plane ratio; they do not resolve facade azimuth, horizontal shadow displacement or a side-fin geometry.

The Richmond Hill worksheet uses latitude 43.8711° and records longitude -79.4373°. A project study must replace the reference point, use the actual facade normal and obstruction mask, convert to civil time, test the full occupied period and account for diffuse sky, glazing and thermal performance. Refine solar positions with the NREL SPA.

Where can you explore related guidance?

• Explore all solar data guidance
• Sun Path: Richmond Hill, Canada
• Daylight & Orientation: Richmond Hill, Canada
• Solar Shading Design: Vaughan, Canada
• Solar Shading Design: Toronto, Canada
• All solar & daylight data guidance for Canada
• Climate Design Data: Richmond Hill, Canada

Sources and method

Location data from the GeoNames CA dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 6122091). 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. Project-date refinement reference: NREL Solar Position Algorithm.

Source links

• download.geonames.org

• nrc.canada.ca

• gml.noaa.gov

• midcdmz.nrel.gov