Solar & Daylight Data
Daylight & Orientation: Iskandar Puteri, Malaysia
How to research daylight & orientation for a specific site in Iskandar Puteri — the controlling authority, source documents, and checks to run before you rely on a number.
Last updated September 2, 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 10063567). 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. Project-date refinement reference: [NREL Solar Position Algorithm](https://midcdmz.nrel.gov/spa/).
Direct answer
For Iskandar Puteri at 1.3932, 103.6232, the declination-only solar-noon altitude is approximately 68.0° at the June solstice, 88.6° at an equinox and 65.2° 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 10063567 in administrative area 01, at 1.3932, 103.6232; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 68.0° at the June solstice, 88.6° at an equinox and 65.2° at the December solstice. Representative 21st-day geometry ranges from about 11.9 hours in December to 12.1 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 daylight and building orientation 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 Iskandar Puteri?
Iskandar Puteri is represented here at approximately 1.3932, 103.6232 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 daylight and building orientation 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 daylight-workflow page is a project-starting worksheet, not a design value or approval. The controlling authority and qualified professionals for the Iskandar Puteri site remain authoritative.
Iskandar Puteri monthly daylight-orientation ledger
| Representative date | Geometric daylight | Solar sunrise | Solar sunset | Sunrise hour angle | Noon bearing | Change from prior month |
|---|---|---|---|---|---|---|
| 21 January | 11.932 h | 06.03 | 17.97 | 89.49° | 180.0° | +0.012 h |
| 21 February | 11.963 h | 06.02 | 17.98 | 89.72° | 180.0° | +0.031 h |
| 21 March | 11.999 h | 06.00 | 18.00 | 89.99° | 180.0° | +0.036 h |
| 21 April | 12.038 h | 05.98 | 18.02 | 90.29° | 0.0° | +0.039 h |
| 21 May | 12.068 h | 05.97 | 18.03 | 90.51° | 0.0° | +0.030 h |
| 21 June | 12.081 h | 05.96 | 18.04 | 90.60° | 0.0° | +0.012 h |
| 21 July | 12.069 h | 05.97 | 18.03 | 90.52° | 0.0° | -0.011 h |
| 21 August | 12.039 h | 05.98 | 18.02 | 90.29° | 0.0° | -0.031 h |
| 21 September | 11.999 h | 06.00 | 18.00 | 90.00° | 180.0° | -0.039 h |
| 21 October | 11.961 h | 06.02 | 17.98 | 89.71° | 180.0° | -0.038 h |
| 21 November | 11.931 h | 06.03 | 17.97 | 89.48° | 180.0° | -0.031 h |
| 21 December | 11.919 h | 06.04 | 17.96 | 89.40° | 180.0° | -0.011 h |
Orientation checks prompted by the Iskandar Puteri ledger
The representative daylight span runs from 11.919 hours on 21 December to 12.081 hours on 21 June. Solar sunrise and sunset are expressed in apparent solar time, not a time-zone clock. The noon-bearing column is a true-north azimuth screen and becomes unstable when the sun passes close to zenith.
For Iskandar Puteri at 1.3932°, 103.6232°, test each occupied facade against the actual horizon, adjacent buildings, glazing, room depth and target illuminance. This ledger describes geometric availability only; it does not estimate irradiance, daylight autonomy, glare or energy. Refine project-date positions with the NREL SPA.
Where can you explore related guidance?
- Explore all solar data guidance
- Sun Path: Iskandar Puteri, Malaysia
- Solar Altitude & Azimuth: Iskandar Puteri, Malaysia
- Solar Shading Design: Iskandar Puteri, Malaysia
- Sun Path: Kota Bharu, Malaysia
- Solar Altitude & Azimuth: Kota Bharu, Malaysia
- Solar Shading Design: Kota Bharu, Malaysia
- Daylight & Orientation: Kota Bharu, Malaysia
- Sun Path: Kuantan, Malaysia
- Solar Altitude & Azimuth: Kuantan, Malaysia
- Solar Shading Design: Kuantan, Malaysia
- Daylight & Orientation: Kuantan, Malaysia
- Sun Path: Kota Kuala Muda, Malaysia
- Solar Altitude & Azimuth: Kota Kuala Muda, Malaysia
- Solar Shading Design: Kota Kuala Muda, Malaysia
- Daylight & Orientation: Kota Kuala Muda, Malaysia
- Sun Path: Sungai Petani, Malaysia
- Solar Altitude & Azimuth: Sungai Petani, Malaysia
- Solar Shading Design: Sungai Petani, Malaysia
- Daylight & Orientation: Sungai Petani, Malaysia
- Sun Path: Selayang Baru Utara, Malaysia
- Solar Altitude & Azimuth: Selayang Baru Utara, Malaysia
- Solar Shading Design: Selayang Baru Utara, Malaysia
- Daylight & Orientation: Selayang Baru Utara, Malaysia
- Sun Path: Pasir Gudang, Malaysia
- Solar Altitude & Azimuth: Pasir Gudang, Malaysia
- Solar Shading Design: Pasir Gudang, Malaysia
- Sun Path: Mukim Pulai, Malaysia
- Solar Altitude & Azimuth: Mukim Pulai, Malaysia
- Solar Shading Design: Mukim Pulai, Malaysia
- Daylight & Orientation: Mukim Pulai, Malaysia
- Sun Path: Kota Kinabalu, Malaysia
- Solar Altitude & Azimuth: Kota Kinabalu, Malaysia
- Sun Path: Kampung Larkin Lama, Malaysia
- Sun Path: Kota Damansara, Malaysia
- Sun Path: Sandakan, Malaysia
- Sun Path: Kuala Terengganu, Malaysia
- Sun Path: Taman Petaling, Malaysia
- Sun Path: Alor Setar, Malaysia
- Sun Path: Kampung Kangkar Teberau, Malaysia
- Sun Path: Kuching, Malaysia
- Sun Path: Puchong, Malaysia
- Sun Path: Seremban, Malaysia
- Sun Path: Tawau, Malaysia
- Sun Path: Setapak, Malaysia
- Sun Path: Kluang, Malaysia
- Sun Path: Muar, Malaysia
- Sun Path: Miri, Malaysia
- Sun Path: Kapar, Malaysia
- Sun Path: Batu Caves, Malaysia
- Sun Path: Klang, Malaysia
- Sun Path: Kajang, Malaysia
- Sun Path: Teluk Intan, Malaysia
- Sun Path: Kampong Baharu Cheras Batu Sebelas, Malaysia
- Sun Path: Pasir Mas, Malaysia
- Sun Path: Paya Terubong, Malaysia
- Sun Path: Sungai Buloh, Malaysia
- Sun Path: Bandar Seri Alam, Malaysia
- Sun Path: Taiping, Malaysia
- Sun Path: Kuala Lumpur, Malaysia
- Solar Altitude & Azimuth: Kuala Lumpur, Malaysia
- Solar Shading Design: Kuala Lumpur, Malaysia
- Daylight & Orientation: Kuala Lumpur, Malaysia
- Sun Path: Johor Bahru, Malaysia
- Solar Altitude & Azimuth: Johor Bahru, Malaysia
- Daylight & Orientation: Johor Bahru, Malaysia
- Sun Path: Kampung Baru Subang, Malaysia
- Solar Altitude & Azimuth: Kampung Baru Subang, Malaysia
- Solar Shading Design: Kampung Baru Subang, Malaysia
- Daylight & Orientation: Kampung Baru Subang, Malaysia
- Sun Path: Petaling Jaya, Malaysia
- Solar Altitude & Azimuth: Petaling Jaya, Malaysia
- Solar Shading Design: Petaling Jaya, Malaysia
- Daylight & Orientation: Petaling Jaya, Malaysia
- Sun Path: Ipoh, Malaysia
- Solar Altitude & Azimuth: Ipoh, Malaysia
- Solar Shading Design: Ipoh, Malaysia
- Daylight & Orientation: Ipoh, Malaysia
- Sun Path: Shah Alam, Malaysia
- Solar Altitude & Azimuth: Shah Alam, Malaysia
- Solar Shading Design: Shah Alam, Malaysia
- Daylight & Orientation: Shah Alam, Malaysia
- Sun Path: Subang Jaya, Malaysia
- Solar Altitude & Azimuth: Subang Jaya, Malaysia
- Solar Shading Design: Subang Jaya, Malaysia
- Daylight & Orientation: Subang Jaya, Malaysia
- Sun Path: Bukit Rahman Putra, Malaysia
- Solar Altitude & Azimuth: Bukit Rahman Putra, Malaysia
- Solar Shading Design: Bukit Rahman Putra, Malaysia
- Daylight & Orientation: Bukit Rahman Putra, Malaysia
- Sun Path: Pelentong, Malaysia
- Solar Altitude & Azimuth: Pelentong, Malaysia
- Solar Shading Design: Pelentong, Malaysia
- Daylight & Orientation: Pelentong, Malaysia
- Sun Path: Malacca, Malaysia
- Solar Altitude & Azimuth: Malacca, Malaysia
- Solar Shading Design: Malacca, Malaysia
- Daylight & Orientation: Malacca, Malaysia
- All solar & daylight data guidance for Malaysia
- Climate Design Data: Iskandar Puteri, Malaysia
Sources and method
Location data from the GeoNames MY dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 10063567). 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. Project-date refinement reference: NREL Solar Position Algorithm.
Source links
Frequently asked questions
What does the daylight and building orientation record for Iskandar Puteri establish?
The daylight and building orientation record for Iskandar Puteri establishes a reproducible discovery point at 1.3932, 103.6232 (GeoNames ID 10063567, administrative area 01) and a Malaysia source path. It does not establish a final project value, approval or parcel decision.
What must be replaced before using this daylight and building orientation workflow for a project in Iskandar Puteri?
For the daylight and building orientation record in Iskandar Puteri, replace the 1.3932, 103.6232 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
- Daylight & Orientation: International City, UAE
Daylight for International City, UAE: day length 10.4–13.6 h, sunrise/sunset and noon bearing by month; June noon altitude 88.3°.
- Daylight & Orientation: Ipoh, Malaysia
Daylight and orientation for Ipoh, Malaysia: geometric day length 11.7–12.3 h, solar sunrise/sunset and noon bearing by month; June noon altitude 71.1°.
- Daylight & Orientation: Isiolo, Kenya
Daylight and orientation for Isiolo, Kenya: geometric day length 12.0–12.0 h, solar sunrise/sunset and noon bearing by month; June noon altitude 66.9°.
- Daylight & Orientation: Jaipur, India
Daylight and orientation for Jaipur, India: geometric day length 10.3–13.7 h, solar sunrise/sunset and noon bearing by month; June noon altitude 86.5°.
- Daylight & Orientation: Jamshedpur, India
Daylight and orientation for Jamshedpur, India: geometric day length 10.6–13.4 h, solar sunrise/sunset and noon bearing by month; June noon altitude 89.4°.
- Daylight & Orientation: Johor Bahru, Malaysia
Daylight and orientation for Johor Bahru, Malaysia: geometric day length 11.9–12.1 h, solar sunrise/sunset and noon bearing by month; June noon altitude 68.0°.