Solar & Daylight Data

Updated 2026-08-31

Sun Path: Budta, Philippines

How to research sun path for a specific site in Budta — 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 PH dump](https://download.geonames.org/export/dump/PH.zip) (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 1723510). Regulatory starting point: [Department of Public Works and Highways and the local Office of the Building Official](https://www.dpwh.gov.ph/dpwh/references/laws_codes_orders/PD1096). 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 Budta at 7.2042, 124.4397, the declination-only solar-noon altitude is approximately 73.8° at the June solstice, 82.8° at an equinox and 59.4° 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 1723510 in administrative area 14, at 7.2042, 124.4397; replace it with the surveyed parcel point before relying on the result. As a transparent geometry check, declination-only solar-noon altitude is about 73.8° at the June solstice, 82.8° at an equinox and 59.4° at the December solstice. Representative 21st-day geometry ranges from about 11.6 hours in December to 12.4 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 Budta?

Budta is represented here at approximately 7.2042, 124.4397 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?

  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.
InputProject-specific evidenceQA question
Sitesurveyed coordinates, elevation and horizonDoes the point represent the building?
Weather/solar methodnamed dataset, algorithm, period and time basisAre station, time zone and units explicit?
Design scenariocurrent and future scenario agreed by the teamIs an average being mistaken for an extreme?
Complianceadopted local document and editionWas 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 Budta site remain authoritative.

This primary route consolidates the location evidence needed for Sun Path, Solar Altitude & Azimuth, Solar Shading Design, Daylight & Orientation. A narrower route should be released only when it adds a materially different official source, calculation, process, threshold or worked example.

Budta monthly solar geometry check for sun path

Representative dateDeclinationSolar-noon altitudeGeometric daylightNoon shadow / height
21 January-20.14°62.66°11.646 h0.517
21 February-11.23°71.57°11.808 h0.333
21 March-0.40°82.39°11.993 h0.134
21 April+11.58°85.63°12.198 h0.077
21 May+20.14°77.07°12.354 h0.230
21 June+23.45°73.75°12.419 h0.291
21 July+20.44°76.76°12.360 h0.235
21 August+11.75°85.45°12.201 h0.080
21 September-0.20°82.59°11.997 h0.130
21 October-11.75°71.04°11.799 h0.344
21 November-20.44°62.35°11.640 h0.524
21 December-23.45°59.35°11.581 h0.593

Budta solar-geometry fingerprint at 7.2042, 124.4397

  • Budta, 21 January: declination -20.14°, noon altitude 62.66°, zenith 27.34°, geometric daylight 11.646 hours, and vertical-object noon shadow ratio 0.517.
  • Budta, 21 February: declination -11.23°, noon altitude 71.57°, zenith 18.43°, geometric daylight 11.808 hours, and vertical-object noon shadow ratio 0.333.
  • Budta, 21 March: declination -0.40°, noon altitude 82.39°, zenith 7.61°, geometric daylight 11.993 hours, and vertical-object noon shadow ratio 0.134.
  • Budta, 21 April: declination +11.58°, noon altitude 85.63°, zenith 4.37°, geometric daylight 12.198 hours, and vertical-object noon shadow ratio 0.077.
  • Budta, 21 May: declination +20.14°, noon altitude 77.07°, zenith 12.93°, geometric daylight 12.354 hours, and vertical-object noon shadow ratio 0.230.
  • Budta, 21 June: declination +23.45°, noon altitude 73.75°, zenith 16.25°, geometric daylight 12.419 hours, and vertical-object noon shadow ratio 0.291.
  • Budta, 21 July: declination +20.44°, noon altitude 76.76°, zenith 13.24°, geometric daylight 12.360 hours, and vertical-object noon shadow ratio 0.235.
  • Budta, 21 August: declination +11.75°, noon altitude 85.45°, zenith 4.55°, geometric daylight 12.201 hours, and vertical-object noon shadow ratio 0.080.
  • Budta, 21 September: declination -0.20°, noon altitude 82.59°, zenith 7.41°, geometric daylight 11.997 hours, and vertical-object noon shadow ratio 0.130.
  • Budta, 21 October: declination -11.75°, noon altitude 71.04°, zenith 18.96°, geometric daylight 11.799 hours, and vertical-object noon shadow ratio 0.344.
  • Budta, 21 November: declination -20.44°, noon altitude 62.35°, zenith 27.65°, geometric daylight 11.640 hours, and vertical-object noon shadow ratio 0.524.
  • Budta, 21 December: declination -23.45°, noon altitude 59.35°, zenith 30.65°, geometric daylight 11.581 hours, and vertical-object noon shadow ratio 0.593.

Harth computed the Budta fingerprint for latitude 7.2042° with the Cooper declination approximation, 90° - |latitude - declination| at solar noon, centre-to-centre sunrise hour angle and 1 / tan(altitude) shadow ratio. Longitude 124.4397° 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.

Sources and method

Location data from the GeoNames PH dump (CC BY 4.0, snapshot 2026-08-31, GeoNames ID 1723510). Regulatory starting point: Department of Public Works and Highways and the local Office of the Building Official. 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.

Frequently asked questions

What does the sun path record for Budta establish?

The sun path record for Budta establishes a reproducible discovery point at 7.2042, 124.4397 (GeoNames ID 1723510, administrative area 14) and a Philippines 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 Budta?

For the sun path record in Budta, replace the 7.2042, 124.4397 city reference with the surveyed site or parcel, identify the competent local authority, and verify the current documents under National Building Code of the Philippines and its referral codes. Record the edition, retrieval date, units, assumptions and named checker before relying on the result.

Design for your site's sun.Render it on your 3D model.