Altura Sol meio-dia

The solar noon height calculator determines the Sun's elevation above the horizon at solar noon using the formula h = 90° − |latitude − solar declination|. This metric is crucial for solar energy projects, sustainable architecture, and agriculture, as it helps assess direct sunlight exposure for a given location. Solar declination varies annually due to Earth's tilt, while latitude remains constant for each locality.

The calculation is straightforward: subtract the location's latitude from the solar declination for the day, take the absolute value, and subtract from 90°. For instance, in São Paulo (latitude ~23°S) on December 21 (declination ~23.5°S), the result is ~90° − |−23 − (−23.5)| = 89.5°. Positive values indicate the Sun is above the horizon; negatives mean no solar noon occurs there on that day.

Use this tool to plan solar panel installations, assess building shading, or analyze light patterns across seasons. Accuracy depends on the exact solar noon time, which may differ from clock time due to the equation of time and time zones.

Note: The formula excludes local obstructions (e.g., mountains) and atmospheric refraction, which can lower the actual Sun height. For critical applications, manually adjust for these factors or use specialized software with topographic data.