# Sun Path & Solar Angles for Denver, CO

> Calculated solar-noon angles and a first-pass fixed-shading worksheet for Denver, CO, using transparent solar geometry rather than an unexplained chart.

- Canonical: https://harth.build/resources/solar-data/sun-path-and-solar-angles-denver-co/
- Last updated: 2026-08-17
- Data source: Original calculation using latitude 39.7392° N and declinations +23.44°, 0°, and -23.44°. Formula: altitude = 90° - |latitude - declination|. Time zone: America/Denver. Verify occupied-hour positions with the NOAA Solar Calculator; values omit refraction, equation of time, terrain, obstructions, and facade azimuth.

## Key facts

| Fact | Value |
| --- | --- |
| Latitude | 39.7392° N (Denver, CO) |
| June solstice noon | 73.7° (south at solar noon) |
| Equinox noon | 50.3° (geometric solar noon) |
| December solstice noon | 26.8° (geometric solar noon) |

## Direct answer

Calculated solar-noon angles and a first-pass fixed-shading worksheet for Denver, CO, using transparent solar geometry rather than an unexplained chart. A key reference is latitude: 39.7392° N; check the cited source, edition, units, and applicability before using it for design, compliance, procurement, or approval. Latitude is 39.7392° N; Denver, CO. June solstice noon is 73.7°; south at solar noon. Equinox noon is 50.3°; geometric solar noon. Projection ratio = 1 / tan(solar altitude). Multiply the ratio by the vertical distance the noon shadow must cover. Use this only as a hand check before a full-year study. Read the values with the cited source, edition or observation period, units and applicability; replace illustrative inputs with current project evidence before design, procurement or approval use.

*Content and cited inputs reviewed by [Harth team](https://www.linkedin.com/company/harth-build) · Published 2026-08-17 · Updated 2026-08-17.*


![Labeled sun-path diagram: Sun Path & Solar Angles for Denver, CO](https://efwwel0vyt9vy5so.public.blob.vercel-storage.com/images/solar-data/sun-path-and-solar-angles-denver-co/diagram-1344.webp)

*Calculated solar-noon angles and a first-pass fixed-shading worksheet for Denver, CO, using transparent solar geometry rather than an unexplained chart.*

## Which solar conditions control the result?

| Date | Declination | Altitude | Projection / vertical shade distance |
| --- | ---: | ---: | ---: |
| June solstice | +23.44° | 73.70° | 0.292 |
| Equinox | 0° | 50.26° | 0.831 |
| December solstice | -23.44° | 26.82° | 1.978 |

Projection ratio = 1 / tan(solar altitude). Multiply the ratio by the vertical distance the noon shadow must cover. Use this only as a hand check before a full-year study.

## Denver, CO shading record

Record facade azimuth, window head and sill, overhang height, required shaded dates and hours, coordinates (39.7392° N), time zone (America/Denver), calculation method, surrounding obstructions, reviewer and date. Compare the full model against the three noon ratios above and retain screenshots of the critical summer and shoulder-season hours. Verify hourly positions with the [NOAA Solar Calculator](https://gml.noaa.gov/grad/solcalc/).

## Where can you explore related guidance?

- [Explore all solar data guidance](https://harth.build/resources/solar-data.md)
- [Understanding Sun-Path Diagrams](https://harth.build/resources/solar-data/understanding-sun-path-diagrams.md)
- [Solar Altitude and Azimuth Explained](https://harth.build/resources/solar-data/solar-altitude-and-azimuth-explained.md)
- [Climate Design Data Workflow for Denver, CO](https://harth.build/resources/climate-data/climate-design-data-workflow-denver-co.md)

## Sources and method

Original calculation using latitude 39.7392° N and declinations +23.44°, 0°, and -23.44°. Formula: altitude = 90° - |latitude - declination|. Time zone: America/Denver. Verify occupied-hour positions with the NOAA Solar Calculator; values omit refraction, equation of time, terrain, obstructions, and facade azimuth.

### Source links

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

## Frequently asked questions

### What is the sun angle in Denver, CO at the summer solstice?

The declination-only solar-noon altitude is approximately 73.7°. This is a transparent geometry check, not a substitute for an hourly solar-position calculation.

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