Sun Path: Las Piñas, Philippines

Direct answer

For Las Piñas at 14.4506, 120.9828, the declination-only solar-noon altitude is approximately 81.0° at the June solstice, 75.5° at an equinox and 52.1° 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 1707174 in administrative area NCR, at 14.4506, 120.9828; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 81.0° at the June solstice, 75.5° at an equinox and 52.1° at the December solstice. Representative 21st-day geometry ranges from about 11.1 hours in December to 12.9 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 Las Piñas?

Las Piñas is represented here at approximately 14.4506, 120.9828 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 Las Piñas site remain authoritative.

Which related searches does this primary location record cover?

This primary route consolidates the location evidence needed for Sun Path, Solar Altitude & Azimuth, Solar Shading Design, Daylight & Orientation. A narrower route should be released only when it adds a materially different official source, calculation, process, threshold or worked example.

Las Piñas monthly solar geometry check for sun path

Las Piñas solar-geometry fingerprint at 14.4506, 120.9828

• Las Piñas, 21 January: declination -20.14°, noon altitude 55.41°, zenith 34.59°, geometric daylight 11.277 hours, and vertical-object noon shadow ratio 0.690.
• Las Piñas, 21 February: declination -11.23°, noon altitude 64.32°, zenith 25.68°, geometric daylight 11.609 hours, and vertical-object noon shadow ratio 0.481.
• Las Piñas, 21 March: declination -0.40°, noon altitude 75.15°, zenith 14.85°, geometric daylight 11.986 hours, and vertical-object noon shadow ratio 0.265.
• Las Piñas, 21 April: declination +11.58°, noon altitude 87.13°, zenith 2.87°, geometric daylight 12.404 hours, and vertical-object noon shadow ratio 0.050.
• Las Piñas, 21 May: declination +20.14°, noon altitude 84.31°, zenith 5.69°, geometric daylight 12.723 hours, and vertical-object noon shadow ratio 0.100.
• Las Piñas, 21 June: declination +23.45°, noon altitude 81.00°, zenith 9.00°, geometric daylight 12.856 hours, and vertical-object noon shadow ratio 0.158.
• Las Piñas, 21 July: declination +20.44°, noon altitude 84.01°, zenith 5.99°, geometric daylight 12.735 hours, and vertical-object noon shadow ratio 0.105.
• Las Piñas, 21 August: declination +11.75°, noon altitude 87.30°, zenith 2.70°, geometric daylight 12.410 hours, and vertical-object noon shadow ratio 0.047.
• Las Piñas, 21 September: declination -0.20°, noon altitude 75.35°, zenith 14.65°, geometric daylight 11.993 hours, and vertical-object noon shadow ratio 0.261.
• Las Piñas, 21 October: declination -11.75°, noon altitude 63.80°, zenith 26.20°, geometric daylight 11.590 hours, and vertical-object noon shadow ratio 0.492.
• Las Piñas, 21 November: declination -20.44°, noon altitude 55.11°, zenith 34.89°, geometric daylight 11.265 hours, and vertical-object noon shadow ratio 0.697.
• Las Piñas, 21 December: declination -23.45°, noon altitude 52.10°, zenith 37.90°, geometric daylight 11.144 hours, and vertical-object noon shadow ratio 0.778.

Harth computed the Las Piñas fingerprint for latitude 14.4506° with the Cooper declination approximation, 90° - |latitude - declination| at solar noon, centre-to-centre sunrise hour angle and 1 / tan(altitude) shadow ratio. Longitude 120.9828° 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
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• All solar & daylight data guidance for Philippines

Sources and method

Location data from the GeoNames PH dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 1707174). Regulatory starting point: Department of Public Works and Highways and the local Office of the Building Official. 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

• dpwh.gov.ph

• gml.noaa.gov