Solar & Daylight Data
Sun Path: Lahbab, UAE
How to research sun path for a specific site in Lahbab — 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 AE dump](https://download.geonames.org/export/dump/AE.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 13118439). Regulatory starting point: [UAE Government overview of local building authorities](https://u.ae/en/information-and-services/justice-safety-and-the-law/building-safety). 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 Lahbab at 25.0376, 55.5913, the declination-only solar-noon altitude is approximately 88.4° at the June solstice, 65.0° at an equinox and 41.5° 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 13118439 in administrative area 03, at 25.0376, 55.5913; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 88.4° at the June solstice, 65.0° at an equinox and 41.5° at the December solstice. Representative 21st-day geometry ranges from about 10.4 hours in December to 13.6 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 Lahbab?
Lahbab is represented here at approximately 25.0376, 55.5913 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 Lahbab site remain authoritative.
Lahbab monthly solar geometry check for sun path
| Representative date | Declination | Solar-noon altitude | Geometric daylight | Noon shadow / height |
|---|---|---|---|---|
| 21 January | -20.14° | 44.82° | 10.685 h | 1.006 |
| 21 February | -11.23° | 53.74° | 11.291 h | 0.734 |
| 21 March | -0.40° | 64.56° | 11.975 h | 0.476 |
| 21 April | +11.58° | 76.54° | 12.732 h | 0.239 |
| 21 May | +20.14° | 85.10° | 13.315 h | 0.086 |
| 21 June | +23.45° | 88.41° | 13.559 h | 0.028 |
| 21 July | +20.44° | 85.40° | 13.337 h | 0.080 |
| 21 August | +11.75° | 76.72° | 12.744 h | 0.236 |
| 21 September | -0.20° | 64.76° | 11.987 h | 0.471 |
| 21 October | -11.75° | 53.21° | 11.256 h | 0.748 |
| 21 November | -20.44° | 44.52° | 10.663 h | 1.017 |
| 21 December | -23.45° | 41.51° | 10.441 h | 1.130 |
Lahbab solar-geometry fingerprint at 25.0376, 55.5913
- Lahbab, 21 January: declination -20.14°, noon altitude 44.82°, zenith 45.18°, geometric daylight 10.685 hours, and vertical-object noon shadow ratio 1.006.
- Lahbab, 21 February: declination -11.23°, noon altitude 53.74°, zenith 36.26°, geometric daylight 11.291 hours, and vertical-object noon shadow ratio 0.734.
- Lahbab, 21 March: declination -0.40°, noon altitude 64.56°, zenith 25.44°, geometric daylight 11.975 hours, and vertical-object noon shadow ratio 0.476.
- Lahbab, 21 April: declination +11.58°, noon altitude 76.54°, zenith 13.46°, geometric daylight 12.732 hours, and vertical-object noon shadow ratio 0.239.
- Lahbab, 21 May: declination +20.14°, noon altitude 85.10°, zenith 4.90°, geometric daylight 13.315 hours, and vertical-object noon shadow ratio 0.086.
- Lahbab, 21 June: declination +23.45°, noon altitude 88.41°, zenith 1.59°, geometric daylight 13.559 hours, and vertical-object noon shadow ratio 0.028.
- Lahbab, 21 July: declination +20.44°, noon altitude 85.40°, zenith 4.60°, geometric daylight 13.337 hours, and vertical-object noon shadow ratio 0.080.
- Lahbab, 21 August: declination +11.75°, noon altitude 76.72°, zenith 13.28°, geometric daylight 12.744 hours, and vertical-object noon shadow ratio 0.236.
- Lahbab, 21 September: declination -0.20°, noon altitude 64.76°, zenith 25.24°, geometric daylight 11.987 hours, and vertical-object noon shadow ratio 0.471.
- Lahbab, 21 October: declination -11.75°, noon altitude 53.21°, zenith 36.79°, geometric daylight 11.256 hours, and vertical-object noon shadow ratio 0.748.
- Lahbab, 21 November: declination -20.44°, noon altitude 44.52°, zenith 45.48°, geometric daylight 10.663 hours, and vertical-object noon shadow ratio 1.017.
- Lahbab, 21 December: declination -23.45°, noon altitude 41.51°, zenith 48.49°, geometric daylight 10.441 hours, and vertical-object noon shadow ratio 1.130.
Harth computed the Lahbab fingerprint for latitude 25.0376° with the Cooper declination approximation, 90° - |latitude - declination| at solar noon, centre-to-centre sunrise hour angle and 1 / tan(altitude) shadow ratio. Longitude 55.5913° 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 United Arab Emirates
Sources and method
Location data from the GeoNames AE dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 13118439). Regulatory starting point: UAE Government overview of local building authorities. 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 Lahbab establish?
The sun path record for Lahbab establishes a reproducible discovery point at 25.0376, 55.5913 (GeoNames ID 13118439, administrative area 03) and a United Arab Emirates 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 Lahbab?
For the sun path record in Lahbab, replace the 25.0376, 55.5913 city reference with the surveyed site or parcel, identify the competent local authority, and verify the current documents under emirate- and municipality-specific building regulations and permit systems. Record the edition, retrieval date, units, assumptions and named checker before relying on the result.
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