Solar & Daylight Data
Daylight & Orientation: Al Ain City, UAE
How to research daylight & orientation for a specific site in Al Ain City — the controlling authority, source documents, and checks to run before you rely on a number.
On this page
Last updated September 2, 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 292913). 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. Project-date refinement reference: [NREL Solar Position Algorithm](https://midcdmz.nrel.gov/spa/).
Direct answer
For Al Ain City at 24.1917, 55.7606, the declination-only solar-noon altitude is approximately 89.2° at the June solstice, 65.8° at an equinox and 42.4° 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 292913 in administrative area 01, at 24.1917, 55.7606; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 89.2° at the June solstice, 65.8° at an equinox and 42.4° at the December solstice. Representative 21st-day geometry ranges from about 10.5 hours in December to 13.5 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.
Content and cited inputs reviewed by Harth team · Published 2026-08-26 · Updated 2026-09-02.
What must be verified for Al Ain City?
Al Ain City is represented here at approximately 24.1917, 55.7606 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 Al Ain City site remain authoritative.
Al Ain City monthly daylight-orientation ledger
| Representative date | Geometric daylight | Solar sunrise | Solar sunset | Sunrise hour angle | Noon bearing | Change from prior month |
|---|---|---|---|---|---|---|
| 21 January | 10.736 h | 06.63 | 17.37 | 80.52° | 180.0° | +0.234 h |
| 21 February | 11.318 h | 06.34 | 17.66 | 84.88° | 180.0° | +0.582 h |
| 21 March | 11.976 h | 06.01 | 17.99 | 89.82° | 180.0° | +0.658 h |
| 21 April | 12.704 h | 05.65 | 18.35 | 95.28° | 180.0° | +0.728 h |
| 21 May | 13.264 h | 05.37 | 18.63 | 99.48° | 180.0° | +0.560 h |
| 21 June | 13.498 h | 05.25 | 18.75 | 101.24° | 180.0° | +0.234 h |
| 21 July | 13.285 h | 05.36 | 18.64 | 99.64° | 180.0° | -0.213 h |
| 21 August | 12.715 h | 05.64 | 18.36 | 95.36° | 180.0° | -0.570 h |
| 21 September | 11.988 h | 06.01 | 17.99 | 89.91° | 180.0° | -0.727 h |
| 21 October | 11.285 h | 06.36 | 17.64 | 84.64° | 180.0° | -0.703 h |
| 21 November | 10.715 h | 06.64 | 17.36 | 80.36° | 180.0° | -0.570 h |
| 21 December | 10.502 h | 06.75 | 17.25 | 78.76° | 180.0° | -0.213 h |
Orientation checks prompted by the Al Ain City ledger
The representative daylight span runs from 10.502 hours on 21 December to 13.498 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 Al Ain City at 24.1917°, 55.7606°, 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?
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Sources and method
Location data from the GeoNames AE dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 292913). 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. Project-date refinement reference: NREL Solar Position Algorithm.
Source links
Frequently asked questions
What does the daylight and building orientation record for Al Ain City establish?
The daylight and building orientation record for Al Ain City establishes a reproducible discovery point at 24.1917, 55.7606 (GeoNames ID 292913, administrative area 01) 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 daylight and building orientation workflow for a project in Al Ain City?
For the daylight and building orientation record in Al Ain City, replace the 24.1917, 55.7606 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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