# Daylight & Orientation: Ongata Rongai, Kenya

> How to research daylight & orientation for a specific site in Ongata Rongai — the controlling authority, source documents, and checks to run before you rely on a number.

- Canonical: https://harth.build/resources/solar-data/daylight-orientation-ongata-rongai-ke/
- Last updated: 2026-09-02
- Data source: Location data from the [GeoNames KE dump](https://download.geonames.org/export/dump/KE.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 189723). Regulatory starting point: [National Construction Authority and the applicable county government](https://www.nca.go.ke/). 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/).

## Key facts

| Fact | Value |
| --- | --- |
| Location reference | -1.3953, 36.7640 (GeoNames ID 189723; replace with surveyed project coordinates) |
| Administrative area | 19 (GeoNames snapshot code; confirm the competent local jurisdiction) |
| Regulatory starting point | National Building Code and county development-control requirements (country-level context only; identify the competent local authority) |
| June-solstice solar-noon check | 65.2° (declination-only geometry; not an hourly obstruction model) |
| Equinox solar-noon check | 88.6° (declination-only geometry) |
| December-solstice solar-noon check | 68.0° (declination-only geometry; verify civil time and horizon) |
| Approximate daylight range | 11.9–12.1 hours (representative 21st-day geometry (June to December); excludes refraction and terrain) |

## Direct answer

For Ongata Rongai at -1.3953, 36.7640, the declination-only solar-noon altitude is approximately 65.2° at the June solstice, 88.6° at an equinox and 68.0° 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 189723 in administrative area 19, at -1.3953, 36.7640; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 65.2° at the June solstice, 88.6° at an equinox and 68.0° at the December solstice. Representative 21st-day geometry ranges from about 11.9 hours in June to 12.1 hours in December; 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.

*Content and cited inputs reviewed by [Scott Barrington](https://nz.linkedin.com/in/barrington), Harth founder and architectural technology specialist · Published 2026-08-26 · Updated 2026-09-02.*

## What must be verified for Ongata Rongai?

Ongata Rongai is represented here at approximately **-1.3953, 36.7640** 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?

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.

| 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 Ongata Rongai site remain authoritative.

## Ongata Rongai monthly solar geometry check for daylight & orientation

| Representative date | Declination | Solar-noon altitude | Geometric daylight | Noon shadow / height |
| --- | ---: | ---: | ---: | ---: |
| 21 January | -20.14° | 71.26° | 12.068 h | 0.339 |
| 21 February | -11.23° | 80.17° | 12.037 h | 0.173 |
| 21 March | -0.40° | 89.01° | 12.001 h | 0.017 |
| 21 April | +11.58° | 77.03° | 11.962 h | 0.230 |
| 21 May | +20.14° | 68.47° | 11.932 h | 0.395 |
| 21 June | +23.45° | 65.15° | 11.919 h | 0.463 |
| 21 July | +20.44° | 68.16° | 11.931 h | 0.401 |
| 21 August | +11.75° | 76.85° | 11.961 h | 0.234 |
| 21 September | -0.20° | 88.81° | 12.001 h | 0.021 |
| 21 October | -11.75° | 79.64° | 12.039 h | 0.183 |
| 21 November | -20.44° | 70.95° | 12.069 h | 0.345 |
| 21 December | -23.45° | 67.95° | 12.081 h | 0.405 |

## Ongata Rongai solar-geometry fingerprint at -1.3953, 36.7640

- **Ongata Rongai, 21 January:** declination -20.14°, noon altitude 71.26°, zenith 18.74°, geometric daylight 12.068 hours, and vertical-object noon shadow ratio 0.339.
- **Ongata Rongai, 21 February:** declination -11.23°, noon altitude 80.17°, zenith 9.83°, geometric daylight 12.037 hours, and vertical-object noon shadow ratio 0.173.
- **Ongata Rongai, 21 March:** declination -0.40°, noon altitude 89.01°, zenith 0.99°, geometric daylight 12.001 hours, and vertical-object noon shadow ratio 0.017.
- **Ongata Rongai, 21 April:** declination +11.58°, noon altitude 77.03°, zenith 12.97°, geometric daylight 11.962 hours, and vertical-object noon shadow ratio 0.230.
- **Ongata Rongai, 21 May:** declination +20.14°, noon altitude 68.47°, zenith 21.53°, geometric daylight 11.932 hours, and vertical-object noon shadow ratio 0.395.
- **Ongata Rongai, 21 June:** declination +23.45°, noon altitude 65.15°, zenith 24.85°, geometric daylight 11.919 hours, and vertical-object noon shadow ratio 0.463.
- **Ongata Rongai, 21 July:** declination +20.44°, noon altitude 68.16°, zenith 21.84°, geometric daylight 11.931 hours, and vertical-object noon shadow ratio 0.401.
- **Ongata Rongai, 21 August:** declination +11.75°, noon altitude 76.85°, zenith 13.15°, geometric daylight 11.961 hours, and vertical-object noon shadow ratio 0.234.
- **Ongata Rongai, 21 September:** declination -0.20°, noon altitude 88.81°, zenith 1.19°, geometric daylight 12.001 hours, and vertical-object noon shadow ratio 0.021.
- **Ongata Rongai, 21 October:** declination -11.75°, noon altitude 79.64°, zenith 10.36°, geometric daylight 12.039 hours, and vertical-object noon shadow ratio 0.183.
- **Ongata Rongai, 21 November:** declination -20.44°, noon altitude 70.95°, zenith 19.05°, geometric daylight 12.069 hours, and vertical-object noon shadow ratio 0.345.
- **Ongata Rongai, 21 December:** declination -23.45°, noon altitude 67.95°, zenith 22.05°, geometric daylight 12.081 hours, and vertical-object noon shadow ratio 0.405.

Harth computed the Ongata Rongai fingerprint for latitude -1.3953° with the Cooper declination approximation, `90° - |latitude - declination|` at solar noon, centre-to-centre sunrise hour angle and `1 / tan(altitude)` shadow ratio. Longitude 36.7640° is retained for a later civil-time conversion; this screen does not perform that conversion. See [NOAA's solar calculation details](https://gml.noaa.gov/grad/solcalc/calcdetails.html). Atmospheric refraction, terrain, facade azimuth and obstructions remain outside this first-pass comparison.

## Where can you explore related guidance?

- [Explore all solar data guidance](https://harth.build/resources/solar-data.md)
- [Sun Path: Ongata Rongai, Kenya](https://harth.build/resources/solar-data/sun-path-ongata-rongai-ke.md)
- [Solar Altitude & Azimuth: Ongata Rongai, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-ongata-rongai-ke.md)
- [Solar Shading Design: Ongata Rongai, Kenya](https://harth.build/resources/solar-data/solar-shading-design-ongata-rongai-ke.md)
- [Sun Path: Jomvu, Kenya](https://harth.build/resources/solar-data/sun-path-jomvu-ke.md)
- [Solar Altitude & Azimuth: Jomvu, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-jomvu-ke.md)
- [Solar Shading Design: Jomvu, Kenya](https://harth.build/resources/solar-data/solar-shading-design-jomvu-ke.md)
- [Daylight & Orientation: Jomvu, Kenya](https://harth.build/resources/solar-data/daylight-orientation-jomvu-ke.md)
- [Sun Path: Garissa, Kenya](https://harth.build/resources/solar-data/sun-path-garissa-ke.md)
- [Solar Altitude & Azimuth: Garissa, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-garissa-ke.md)
- [Solar Shading Design: Garissa, Kenya](https://harth.build/resources/solar-data/solar-shading-design-garissa-ke.md)
- [Daylight & Orientation: Garissa, Kenya](https://harth.build/resources/solar-data/daylight-orientation-garissa-ke.md)
- [Sun Path: Kitale, Kenya](https://harth.build/resources/solar-data/sun-path-kitale-ke.md)
- [Solar Altitude & Azimuth: Kitale, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-kitale-ke.md)
- [Solar Shading Design: Kitale, Kenya](https://harth.build/resources/solar-data/solar-shading-design-kitale-ke.md)
- [Daylight & Orientation: Kitale, Kenya](https://harth.build/resources/solar-data/daylight-orientation-kitale-ke.md)
- [Sun Path: Limuru, Kenya](https://harth.build/resources/solar-data/sun-path-limuru-ke.md)
- [Solar Altitude & Azimuth: Limuru, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-limuru-ke.md)
- [Solar Shading Design: Limuru, Kenya](https://harth.build/resources/solar-data/solar-shading-design-limuru-ke.md)
- [Daylight & Orientation: Limuru, Kenya](https://harth.build/resources/solar-data/daylight-orientation-limuru-ke.md)
- [Sun Path: Juja, Kenya](https://harth.build/resources/solar-data/sun-path-juja-ke.md)
- [Solar Altitude & Azimuth: Juja, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-juja-ke.md)
- [Solar Shading Design: Juja, Kenya](https://harth.build/resources/solar-data/solar-shading-design-juja-ke.md)
- [Daylight & Orientation: Juja, Kenya](https://harth.build/resources/solar-data/daylight-orientation-juja-ke.md)
- [Sun Path: Kitengela, Kenya](https://harth.build/resources/solar-data/sun-path-kitengela-ke.md)
- [Solar Altitude & Azimuth: Kitengela, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-kitengela-ke.md)
- [Solar Shading Design: Kitengela, Kenya](https://harth.build/resources/solar-data/solar-shading-design-kitengela-ke.md)
- [Daylight & Orientation: Kitengela, Kenya](https://harth.build/resources/solar-data/daylight-orientation-kitengela-ke.md)
- [Sun Path: Kiambu, Kenya](https://harth.build/resources/solar-data/sun-path-kiambu-ke.md)
- [Solar Altitude & Azimuth: Kiambu, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-kiambu-ke.md)
- [Solar Shading Design: Kiambu, Kenya](https://harth.build/resources/solar-data/solar-shading-design-kiambu-ke.md)
- [Daylight & Orientation: Kiambu, Kenya](https://harth.build/resources/solar-data/daylight-orientation-kiambu-ke.md)
- [Sun Path: Mlolongo, Kenya](https://harth.build/resources/solar-data/sun-path-mlolongo-ke.md)
- [Solar Altitude & Azimuth: Mlolongo, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-mlolongo-ke.md)
- [Solar Shading Design: Mlolongo, Kenya](https://harth.build/resources/solar-data/solar-shading-design-mlolongo-ke.md)
- [Daylight & Orientation: Mlolongo, Kenya](https://harth.build/resources/solar-data/daylight-orientation-mlolongo-ke.md)
- [Sun Path: Malindi, Kenya](https://harth.build/resources/solar-data/sun-path-malindi-ke.md)
- [Solar Altitude & Azimuth: Malindi, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-malindi-ke.md)
- [Solar Shading Design: Malindi, Kenya](https://harth.build/resources/solar-data/solar-shading-design-malindi-ke.md)
- [Daylight & Orientation: Malindi, Kenya](https://harth.build/resources/solar-data/daylight-orientation-malindi-ke.md)
- [Sun Path: Mandera, Kenya](https://harth.build/resources/solar-data/sun-path-mandera-ke.md)
- [Solar Altitude & Azimuth: Mandera, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-mandera-ke.md)
- [Solar Shading Design: Mandera, Kenya](https://harth.build/resources/solar-data/solar-shading-design-mandera-ke.md)
- [Daylight & Orientation: Mandera, Kenya](https://harth.build/resources/solar-data/daylight-orientation-mandera-ke.md)
- [Sun Path: Khwisero, Kenya](https://harth.build/resources/solar-data/sun-path-khwisero-ke.md)
- [Solar Altitude & Azimuth: Khwisero, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-khwisero-ke.md)
- [Solar Shading Design: Khwisero, Kenya](https://harth.build/resources/solar-data/solar-shading-design-khwisero-ke.md)
- [Daylight & Orientation: Khwisero, Kenya](https://harth.build/resources/solar-data/daylight-orientation-khwisero-ke.md)
- [Sun Path: Kisii, Kenya](https://harth.build/resources/solar-data/sun-path-kisii-ke.md)
- [Solar Altitude & Azimuth: Kisii, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-kisii-ke.md)
- [Solar Shading Design: Kisii, Kenya](https://harth.build/resources/solar-data/solar-shading-design-kisii-ke.md)
- [Daylight & Orientation: Kisii, Kenya](https://harth.build/resources/solar-data/daylight-orientation-kisii-ke.md)
- [Sun Path: Ngong, Kenya](https://harth.build/resources/solar-data/sun-path-ngong-ke.md)
- [Solar Altitude & Azimuth: Ngong, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-ngong-ke.md)
- [Solar Shading Design: Ngong, Kenya](https://harth.build/resources/solar-data/solar-shading-design-ngong-ke.md)
- [Daylight & Orientation: Ngong, Kenya](https://harth.build/resources/solar-data/daylight-orientation-ngong-ke.md)
- [Sun Path: Mtwapa, Kenya](https://harth.build/resources/solar-data/sun-path-mtwapa-ke.md)
- [Solar Altitude & Azimuth: Mtwapa, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-mtwapa-ke.md)
- [Solar Shading Design: Mtwapa, Kenya](https://harth.build/resources/solar-data/solar-shading-design-mtwapa-ke.md)
- [Daylight & Orientation: Mtwapa, Kenya](https://harth.build/resources/solar-data/daylight-orientation-mtwapa-ke.md)
- [Sun Path: Wajir, Kenya](https://harth.build/resources/solar-data/sun-path-wajir-ke.md)
- [Solar Altitude & Azimuth: Wajir, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-wajir-ke.md)
- [Solar Shading Design: Wajir, Kenya](https://harth.build/resources/solar-data/solar-shading-design-wajir-ke.md)
- [Daylight & Orientation: Wajir, Kenya](https://harth.build/resources/solar-data/daylight-orientation-wajir-ke.md)
- [Sun Path: Lodwar, Kenya](https://harth.build/resources/solar-data/sun-path-lodwar-ke.md)
- [Solar Altitude & Azimuth: Lodwar, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-lodwar-ke.md)
- [Solar Shading Design: Lodwar, Kenya](https://harth.build/resources/solar-data/solar-shading-design-lodwar-ke.md)
- [Daylight & Orientation: Lodwar, Kenya](https://harth.build/resources/solar-data/daylight-orientation-lodwar-ke.md)
- [Sun Path: Athi River, Kenya](https://harth.build/resources/solar-data/sun-path-athi-river-ke.md)
- [Solar Altitude & Azimuth: Athi River, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-athi-river-ke.md)
- [Solar Shading Design: Athi River, Kenya](https://harth.build/resources/solar-data/solar-shading-design-athi-river-ke.md)
- [Daylight & Orientation: Athi River, Kenya](https://harth.build/resources/solar-data/daylight-orientation-athi-river-ke.md)
- [Sun Path: Meru, Kenya](https://harth.build/resources/solar-data/sun-path-meru-ke.md)
- [Solar Altitude & Azimuth: Meru, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-meru-ke.md)
- [Solar Shading Design: Meru, Kenya](https://harth.build/resources/solar-data/solar-shading-design-meru-ke.md)
- [Daylight & Orientation: Meru, Kenya](https://harth.build/resources/solar-data/daylight-orientation-meru-ke.md)
- [Sun Path: Nyeri, Kenya](https://harth.build/resources/solar-data/sun-path-nyeri-ke.md)
- [Solar Altitude & Azimuth: Nyeri, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-nyeri-ke.md)
- [Solar Shading Design: Nyeri, Kenya](https://harth.build/resources/solar-data/solar-shading-design-nyeri-ke.md)
- [Daylight & Orientation: Nyeri, Kenya](https://harth.build/resources/solar-data/daylight-orientation-nyeri-ke.md)
- [Sun Path: Isiolo, Kenya](https://harth.build/resources/solar-data/sun-path-isiolo-ke.md)
- [Solar Altitude & Azimuth: Isiolo, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-isiolo-ke.md)
- [Solar Shading Design: Isiolo, Kenya](https://harth.build/resources/solar-data/solar-shading-design-isiolo-ke.md)
- [Daylight & Orientation: Isiolo, Kenya](https://harth.build/resources/solar-data/daylight-orientation-isiolo-ke.md)
- [Sun Path: Ukunda, Kenya](https://harth.build/resources/solar-data/sun-path-ukunda-ke.md)
- [Solar Altitude & Azimuth: Ukunda, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-ukunda-ke.md)
- [Solar Shading Design: Ukunda, Kenya](https://harth.build/resources/solar-data/solar-shading-design-ukunda-ke.md)
- [Daylight & Orientation: Ukunda, Kenya](https://harth.build/resources/solar-data/daylight-orientation-ukunda-ke.md)
- [Sun Path: Kiserian, Kenya](https://harth.build/resources/solar-data/sun-path-kiserian-ke.md)
- [Solar Altitude & Azimuth: Kiserian, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-kiserian-ke.md)
- [Solar Shading Design: Kiserian, Kenya](https://harth.build/resources/solar-data/solar-shading-design-kiserian-ke.md)
- [Daylight & Orientation: Kiserian, Kenya](https://harth.build/resources/solar-data/daylight-orientation-kiserian-ke.md)
- [Sun Path: Kilifi, Kenya](https://harth.build/resources/solar-data/sun-path-kilifi-ke.md)
- [Solar Altitude & Azimuth: Kilifi, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-kilifi-ke.md)
- [Solar Shading Design: Kilifi, Kenya](https://harth.build/resources/solar-data/solar-shading-design-kilifi-ke.md)
- [Daylight & Orientation: Kilifi, Kenya](https://harth.build/resources/solar-data/daylight-orientation-kilifi-ke.md)
- [Sun Path: Nanyuki, Kenya](https://harth.build/resources/solar-data/sun-path-nanyuki-ke.md)
- [Solar Altitude & Azimuth: Nanyuki, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-nanyuki-ke.md)
- [Solar Shading Design: Nanyuki, Kenya](https://harth.build/resources/solar-data/solar-shading-design-nanyuki-ke.md)
- [Daylight & Orientation: Nanyuki, Kenya](https://harth.build/resources/solar-data/daylight-orientation-nanyuki-ke.md)
- [Sun Path: Busia, Kenya](https://harth.build/resources/solar-data/sun-path-busia-ke.md)
- [Solar Altitude & Azimuth: Busia, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-busia-ke.md)
- [Solar Shading Design: Busia, Kenya](https://harth.build/resources/solar-data/solar-shading-design-busia-ke.md)
- [Daylight & Orientation: Busia, Kenya](https://harth.build/resources/solar-data/daylight-orientation-busia-ke.md)
- [Sun Path: Migori, Kenya](https://harth.build/resources/solar-data/sun-path-migori-ke.md)
- [Solar Altitude & Azimuth: Migori, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-migori-ke.md)
- [Solar Shading Design: Migori, Kenya](https://harth.build/resources/solar-data/solar-shading-design-migori-ke.md)
- [Daylight & Orientation: Migori, Kenya](https://harth.build/resources/solar-data/daylight-orientation-migori-ke.md)
- [Sun Path: Bungoma, Kenya](https://harth.build/resources/solar-data/sun-path-bungoma-ke.md)
- [Solar Altitude & Azimuth: Bungoma, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-bungoma-ke.md)
- [Solar Shading Design: Bungoma, Kenya](https://harth.build/resources/solar-data/solar-shading-design-bungoma-ke.md)
- [Daylight & Orientation: Bungoma, Kenya](https://harth.build/resources/solar-data/daylight-orientation-bungoma-ke.md)
- [Sun Path: Narok, Kenya](https://harth.build/resources/solar-data/sun-path-narok-ke.md)
- [Solar Altitude & Azimuth: Narok, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-narok-ke.md)
- [Solar Shading Design: Narok, Kenya](https://harth.build/resources/solar-data/solar-shading-design-narok-ke.md)
- [Daylight & Orientation: Narok, Kenya](https://harth.build/resources/solar-data/daylight-orientation-narok-ke.md)
- [Sun Path: Embu, Kenya](https://harth.build/resources/solar-data/sun-path-embu-ke.md)
- [Solar Altitude & Azimuth: Embu, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-embu-ke.md)
- [Solar Shading Design: Embu, Kenya](https://harth.build/resources/solar-data/solar-shading-design-embu-ke.md)
- [Daylight & Orientation: Embu, Kenya](https://harth.build/resources/solar-data/daylight-orientation-embu-ke.md)
- [Sun Path: Machakos, Kenya](https://harth.build/resources/solar-data/sun-path-machakos-ke.md)
- [Solar Altitude & Azimuth: Machakos, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-machakos-ke.md)
- [Solar Shading Design: Machakos, Kenya](https://harth.build/resources/solar-data/solar-shading-design-machakos-ke.md)
- [Daylight & Orientation: Machakos, Kenya](https://harth.build/resources/solar-data/daylight-orientation-machakos-ke.md)
- [Sun Path: Nairobi, Kenya](https://harth.build/resources/solar-data/sun-path-nairobi-ke.md)
- [Solar Altitude & Azimuth: Nairobi, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-nairobi-ke.md)
- [Solar Shading Design: Nairobi, Kenya](https://harth.build/resources/solar-data/solar-shading-design-nairobi-ke.md)
- [Daylight & Orientation: Nairobi, Kenya](https://harth.build/resources/solar-data/daylight-orientation-nairobi-ke.md)
- [Sun Path: Kakamega, Kenya](https://harth.build/resources/solar-data/sun-path-kakamega-ke.md)
- [Solar Altitude & Azimuth: Kakamega, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-kakamega-ke.md)
- [Solar Shading Design: Kakamega, Kenya](https://harth.build/resources/solar-data/solar-shading-design-kakamega-ke.md)
- [Daylight & Orientation: Kakamega, Kenya](https://harth.build/resources/solar-data/daylight-orientation-kakamega-ke.md)
- [Sun Path: Mombasa, Kenya](https://harth.build/resources/solar-data/sun-path-mombasa-ke.md)
- [Solar Altitude & Azimuth: Mombasa, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-mombasa-ke.md)
- [Solar Shading Design: Mombasa, Kenya](https://harth.build/resources/solar-data/solar-shading-design-mombasa-ke.md)
- [Daylight & Orientation: Mombasa, Kenya](https://harth.build/resources/solar-data/daylight-orientation-mombasa-ke.md)
- [Sun Path: Nakuru, Kenya](https://harth.build/resources/solar-data/sun-path-nakuru-ke.md)
- [Solar Altitude & Azimuth: Nakuru, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-nakuru-ke.md)
- [Solar Shading Design: Nakuru, Kenya](https://harth.build/resources/solar-data/solar-shading-design-nakuru-ke.md)
- [Daylight & Orientation: Nakuru, Kenya](https://harth.build/resources/solar-data/daylight-orientation-nakuru-ke.md)
- [Sun Path: Ruiru, Kenya](https://harth.build/resources/solar-data/sun-path-ruiru-ke.md)
- [Solar Altitude & Azimuth: Ruiru, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-ruiru-ke.md)
- [Solar Shading Design: Ruiru, Kenya](https://harth.build/resources/solar-data/solar-shading-design-ruiru-ke.md)
- [Daylight & Orientation: Ruiru, Kenya](https://harth.build/resources/solar-data/daylight-orientation-ruiru-ke.md)
- [Sun Path: Eldoret, Kenya](https://harth.build/resources/solar-data/sun-path-eldoret-ke.md)
- [Solar Altitude & Azimuth: Eldoret, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-eldoret-ke.md)
- [Solar Shading Design: Eldoret, Kenya](https://harth.build/resources/solar-data/solar-shading-design-eldoret-ke.md)
- [Daylight & Orientation: Eldoret, Kenya](https://harth.build/resources/solar-data/daylight-orientation-eldoret-ke.md)
- [Sun Path: Kisumu, Kenya](https://harth.build/resources/solar-data/sun-path-kisumu-ke.md)
- [Solar Altitude & Azimuth: Kisumu, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-kisumu-ke.md)
- [Solar Shading Design: Kisumu, Kenya](https://harth.build/resources/solar-data/solar-shading-design-kisumu-ke.md)
- [Daylight & Orientation: Kisumu, Kenya](https://harth.build/resources/solar-data/daylight-orientation-kisumu-ke.md)
- [Sun Path: Kikuyu, Kenya](https://harth.build/resources/solar-data/sun-path-kikuyu-ke.md)
- [Solar Altitude & Azimuth: Kikuyu, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-kikuyu-ke.md)
- [Solar Shading Design: Kikuyu, Kenya](https://harth.build/resources/solar-data/solar-shading-design-kikuyu-ke.md)
- [Daylight & Orientation: Kikuyu, Kenya](https://harth.build/resources/solar-data/daylight-orientation-kikuyu-ke.md)
- [Sun Path: Thika, Kenya](https://harth.build/resources/solar-data/sun-path-thika-ke.md)
- [Solar Altitude & Azimuth: Thika, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-thika-ke.md)
- [Solar Shading Design: Thika, Kenya](https://harth.build/resources/solar-data/solar-shading-design-thika-ke.md)
- [Daylight & Orientation: Thika, Kenya](https://harth.build/resources/solar-data/daylight-orientation-thika-ke.md)
- [Sun Path: Naivasha, Kenya](https://harth.build/resources/solar-data/sun-path-naivasha-ke.md)
- [Solar Altitude & Azimuth: Naivasha, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-naivasha-ke.md)
- [Solar Shading Design: Naivasha, Kenya](https://harth.build/resources/solar-data/solar-shading-design-naivasha-ke.md)
- [Daylight & Orientation: Naivasha, Kenya](https://harth.build/resources/solar-data/daylight-orientation-naivasha-ke.md)
- [Sun Path: Karuri, Kenya](https://harth.build/resources/solar-data/sun-path-karuri-ke.md)
- [Solar Altitude & Azimuth: Karuri, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-karuri-ke.md)
- [Solar Shading Design: Karuri, Kenya](https://harth.build/resources/solar-data/solar-shading-design-karuri-ke.md)
- [Daylight & Orientation: Karuri, Kenya](https://harth.build/resources/solar-data/daylight-orientation-karuri-ke.md)
- [Sun Path: Matuga, Kenya](https://harth.build/resources/solar-data/sun-path-matuga-ke.md)
- [Solar Altitude & Azimuth: Matuga, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-matuga-ke.md)
- [Solar Shading Design: Matuga, Kenya](https://harth.build/resources/solar-data/solar-shading-design-matuga-ke.md)
- [Daylight & Orientation: Matuga, Kenya](https://harth.build/resources/solar-data/daylight-orientation-matuga-ke.md)
- [Sun Path: Mwala, Kenya](https://harth.build/resources/solar-data/sun-path-mwala-ke.md)
- [Solar Altitude & Azimuth: Mwala, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-mwala-ke.md)
- [Solar Shading Design: Mwala, Kenya](https://harth.build/resources/solar-data/solar-shading-design-mwala-ke.md)
- [Daylight & Orientation: Mwala, Kenya](https://harth.build/resources/solar-data/daylight-orientation-mwala-ke.md)
- [Sun Path: Lang'ata, Kenya](https://harth.build/resources/solar-data/sun-path-lang-ata-ke.md)
- [Solar Altitude & Azimuth: Lang'ata, Kenya](https://harth.build/resources/solar-data/solar-altitude-azimuth-lang-ata-ke.md)
- [Solar Shading Design: Lang'ata, Kenya](https://harth.build/resources/solar-data/solar-shading-design-lang-ata-ke.md)
- [Daylight & Orientation: Lang'ata, Kenya](https://harth.build/resources/solar-data/daylight-orientation-lang-ata-ke.md)
- [All solar & daylight data guidance for Kenya](https://harth.build/resources/solar-data/kenya.md)
- [House Construction Cost Planning: Ongata Rongai, Kenya](https://harth.build/resources/construction-costs/house-construction-cost-ongata-rongai-ke.md)
- [Office Construction Cost Planning: Ongata Rongai, Kenya](https://harth.build/resources/construction-costs/office-construction-cost-ongata-rongai-ke.md)
- [Retail Construction Cost Planning: Ongata Rongai, Kenya](https://harth.build/resources/construction-costs/retail-construction-cost-ongata-rongai-ke.md)
- [School Construction Cost Planning: Ongata Rongai, Kenya](https://harth.build/resources/construction-costs/school-construction-cost-ongata-rongai-ke.md)

## Sources and method

Location data from the [GeoNames KE dump](https://download.geonames.org/export/dump/KE.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 189723). Regulatory starting point: [National Construction Authority and the applicable county government](https://www.nca.go.ke/). 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/).

### Source links

- [download.geonames.org](https://download.geonames.org/export/dump/KE.zip)

- [nca.go.ke](https://www.nca.go.ke/)

- [gml.noaa.gov](https://gml.noaa.gov/grad/solcalc/calcdetails.html)

- [midcdmz.nrel.gov](https://midcdmz.nrel.gov/spa/)

## Frequently asked questions

### What does the daylight and building orientation record for Ongata Rongai establish?

The daylight and building orientation record for Ongata Rongai establishes a reproducible discovery point at -1.3953, 36.7640 (GeoNames ID 189723, administrative area 19) and a Kenya 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 Ongata Rongai?

For the daylight and building orientation record in Ongata Rongai, replace the -1.3953, 36.7640 city reference with the surveyed site or parcel, identify the competent local authority, and verify the current documents under National Building Code and county development-control requirements. Record the edition, retrieval date, units, assumptions and named checker before relying on the result.

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