Solar & Daylight Data
Sun Path: Bukit Rahman Putra, Malaysia
How to research sun path for a specific site in Bukit Rahman Putra — the controlling authority, source documents, and checks to run before you rely on a number.
Last updated August 31, 2026 · Location data from the [GeoNames MY dump](https://download.geonames.org/export/dump/MY.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 13118225). Regulatory starting point: [the applicable state and local authority](https://jkt.kpkt.gov.my/). Figures are illustrative — verify against the current locally adopted edition for the site. Solar-method context: [NOAA Solar Calculation Details](https://gml.noaa.gov/grad/solcalc/calcdetails.html); the Harth monthly table uses a simpler declination and geometric-daylight approximation whose stated limitations must be retained.
Direct answer
For Bukit Rahman Putra at 3.2173, 101.5608, the declination-only solar-noon altitude is approximately 69.8° at the June solstice, 86.8° at an equinox and 63.3° 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 13118225 in administrative area 12, at 3.2173, 101.5608; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 69.8° at the June solstice, 86.8° at an equinox and 63.3° at the December solstice. Representative 21st-day geometry ranges from about 11.8 hours in December to 12.2 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 Bukit Rahman Putra?
Bukit Rahman Putra is represented here at approximately 3.2173, 101.5608 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?
- Fix the surveyed site and local time basis.
- Select an authoritative weather source or a named solar-position algorithm.
- Record period, percentile or scenario and units.
- Test sensitivity to elevation, exposure, urban form and horizon.
- Save the source file, retrieval date and checker in the model record.
| Input | Project-specific evidence | QA question |
|---|---|---|
| Site | surveyed coordinates, elevation and horizon | Does the point represent the building? |
| Weather/solar method | named dataset, algorithm, period and time basis | Are station, time zone and units explicit? |
| Design scenario | current and future scenario agreed by the team | Is an average being mistaken for an extreme? |
| Compliance | adopted local document and edition | Was applicability confirmed with the authority? |
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 Bukit Rahman Putra site remain authoritative.
Bukit Rahman Putra monthly solar geometry check for sun path
| Representative date | Declination | Solar-noon altitude | Geometric daylight | Noon shadow / height |
|---|---|---|---|---|
| 21 January | -20.14° | 66.64° | 11.843 h | 0.432 |
| 21 February | -11.23° | 75.56° | 11.915 h | 0.258 |
| 21 March | -0.40° | 86.38° | 11.997 h | 0.063 |
| 21 April | +11.58° | 81.64° | 12.088 h | 0.147 |
| 21 May | +20.14° | 73.08° | 12.157 h | 0.304 |
| 21 June | +23.45° | 69.77° | 12.186 h | 0.369 |
| 21 July | +20.44° | 72.78° | 12.160 h | 0.310 |
| 21 August | +11.75° | 81.46° | 12.089 h | 0.150 |
| 21 September | -0.20° | 86.58° | 11.998 h | 0.060 |
| 21 October | -11.75° | 75.03° | 11.911 h | 0.267 |
| 21 November | -20.44° | 66.34° | 11.840 h | 0.438 |
| 21 December | -23.45° | 63.33° | 11.814 h | 0.502 |
Bukit Rahman Putra solar-geometry fingerprint at 3.2173, 101.5608
- Bukit Rahman Putra, 21 January: declination -20.14°, noon altitude 66.64°, zenith 23.36°, geometric daylight 11.843 hours, and vertical-object noon shadow ratio 0.432.
- Bukit Rahman Putra, 21 February: declination -11.23°, noon altitude 75.56°, zenith 14.44°, geometric daylight 11.915 hours, and vertical-object noon shadow ratio 0.258.
- Bukit Rahman Putra, 21 March: declination -0.40°, noon altitude 86.38°, zenith 3.62°, geometric daylight 11.997 hours, and vertical-object noon shadow ratio 0.063.
- Bukit Rahman Putra, 21 April: declination +11.58°, noon altitude 81.64°, zenith 8.36°, geometric daylight 12.088 hours, and vertical-object noon shadow ratio 0.147.
- Bukit Rahman Putra, 21 May: declination +20.14°, noon altitude 73.08°, zenith 16.92°, geometric daylight 12.157 hours, and vertical-object noon shadow ratio 0.304.
- Bukit Rahman Putra, 21 June: declination +23.45°, noon altitude 69.77°, zenith 20.23°, geometric daylight 12.186 hours, and vertical-object noon shadow ratio 0.369.
- Bukit Rahman Putra, 21 July: declination +20.44°, noon altitude 72.78°, zenith 17.22°, geometric daylight 12.160 hours, and vertical-object noon shadow ratio 0.310.
- Bukit Rahman Putra, 21 August: declination +11.75°, noon altitude 81.46°, zenith 8.54°, geometric daylight 12.089 hours, and vertical-object noon shadow ratio 0.150.
- Bukit Rahman Putra, 21 September: declination -0.20°, noon altitude 86.58°, zenith 3.42°, geometric daylight 11.998 hours, and vertical-object noon shadow ratio 0.060.
- Bukit Rahman Putra, 21 October: declination -11.75°, noon altitude 75.03°, zenith 14.97°, geometric daylight 11.911 hours, and vertical-object noon shadow ratio 0.267.
- Bukit Rahman Putra, 21 November: declination -20.44°, noon altitude 66.34°, zenith 23.66°, geometric daylight 11.840 hours, and vertical-object noon shadow ratio 0.438.
- Bukit Rahman Putra, 21 December: declination -23.45°, noon altitude 63.33°, zenith 26.67°, geometric daylight 11.814 hours, and vertical-object noon shadow ratio 0.502.
Harth computed the Bukit Rahman Putra fingerprint for latitude 3.2173° with the Cooper declination approximation, 90° - |latitude - declination| at solar noon, centre-to-centre sunrise hour angle and 1 / tan(altitude) shadow ratio. Longitude 101.5608° 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: Sungai Buloh, Malaysia
- Sun Path: Kota Damansara, Malaysia
- Sun Path: Kampung Baru Subang, Malaysia
- Sun Path: Taman Petaling, Malaysia
- All solar & daylight data guidance for Malaysia
- Climate Design Data: Bukit Rahman Putra, Malaysia
Sources and method
Location data from the GeoNames MY dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 13118225). Regulatory starting point: the applicable state and local 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
Frequently asked questions
What does the sun path record for Bukit Rahman Putra establish?
The sun path record for Bukit Rahman Putra establishes a reproducible discovery point at 3.2173, 101.5608 (GeoNames ID 13118225, administrative area 12) and a Malaysia source path. It does not establish a final project value, approval or parcel decision.
What must be replaced before using this sun path workflow for a project in Bukit Rahman Putra?
For the sun path record in Bukit Rahman Putra, replace the 3.2173, 101.5608 city reference with the surveyed site or parcel, identify the competent local authority, and verify the current documents under Uniform Building By-Laws and state or local-authority adoption. Record the edition, retrieval date, units, assumptions and named checker before relying on the result.
Related pages
- Sun Path: Bukit Batok New Town, Singapore
Sun path for Bukit Batok New Town, Singapore: solar-noon altitude 67.9° June, 88.6° equinox, 65.2° December; 11.9–12.1 h daylight; 12-month geometry table.
- Sun Path: Bukit Merah Estate, Singapore
Sun path for Bukit Merah Estate, Singapore: solar-noon altitude 67.8° June, 88.7° equinox, 65.3° December; 11.9–12.1 h daylight; 12-month geometry table.
- Sun Path: Bukit Panjang New Town, Singapore
Sun path for Bukit Panjang New Town, Singapore: solar-noon altitude 67.9° June, 88.6° equinox, 65.2° December; 11.9–12.1 h daylight; 12-month geometry table.
- Sun Path: Bukit Timah, Singapore
Sun path for Bukit Timah, Singapore: solar-noon altitude 67.9° June, 88.7° equinox, 65.2° December; 11.9–12.1 h daylight; 12-month geometry table.
- Sun Path: Bunbury, Australia
Sun path for Bunbury, Australia: solar-noon altitude 33.2° June, 56.7° equinox, 80.1° December; 9.8–14.2 h daylight; 12-month geometry table.
- Sun Path: Bundaberg, Australia
Sun path for Bundaberg, Australia: solar-noon altitude 41.7° June, 65.1° equinox, 88.6° December; 10.5–13.5 h daylight; 12-month geometry table.