Daylight & Orientation: Hervey Bay, Australia

Direct answer

For Hervey Bay at -25.2876, 152.7694, the declination-only solar-noon altitude is approximately 41.3° at the June solstice, 64.7° at an equinox and 88.1° 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 6354957 in administrative area 04, at -25.2876, 152.7694; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 41.3° at the June solstice, 64.7° at an equinox and 88.1° at the December solstice. Representative 21st-day geometry ranges from about 10.4 hours in June to 13.6 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.

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 Hervey Bay?

Hervey Bay is represented here at approximately -25.2876, 152.7694 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.

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 Hervey Bay site remain authoritative.

Hervey Bay monthly daylight-orientation ledger

Orientation checks prompted by the Hervey Bay ledger

The representative daylight span runs from 10.423 hours on 21 June to 13.577 hours on 21 December. 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 Hervey Bay at -25.2876°, 152.7694°, 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.

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Sources and method

Location data from the GeoNames AU dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 6354957). Regulatory starting point: Australian Building Codes Board and the applicable state or territory 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

• download.geonames.org

• ncc.abcb.gov.au

• gml.noaa.gov

• midcdmz.nrel.gov