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Precise Daily Sunset Times in 2026: Calculation, Solar Twilight Phases, and Local Horizon Factors

"Determining the exact time of sunset today depends on precise geometric alignment between your geographic coordinates, Earth's rotational tilt, local elevation, and atmospheric refraction. While search engines output a quick time based on your approximate IP location, true visual and astronomical sunset varies based on fine-scale spatial parameters and atmospheric conditions. The Astronomical Mechanics Behind Daily Sunset Calculations Astronomically, sunset is defined as the precise second when the upper trailing limb of the Sun disappears below the ideal horizon. This is not calculated based on the center of the solar disk, but rather the vi..."

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