Sunset Calculator: Determine Accurate Sunset Times

Calculate Sunset Time for Your Location

Please enter a valid latitude (-90 to 90).
Please enter a valid longitude (-180 to 180).
Please select a date.
Please enter a valid UTC offset (-12 to +14).

Discover the precise moment the sun dips below the horizon with our free Sunset Calculator. Input your location (latitude, longitude) and desired date to get an accurate sunset time, helping you plan outdoor activities, photography, or simply enjoy the evening sky. Quick, reliable, and user-friendly.

Formula:

The Sunset Calculator determines the precise moment the upper limb of the Sun disappears below the horizon. It utilizes complex astronomical algorithms that consider several key factors:

  • Latitude: Your north-south position on Earth (e.g., 34.05 for Los Angeles).
  • Longitude: Your east-west position on Earth (e.g., -118.25 for Los Angeles, negative for Western Hemisphere).
  • Date: The specific day for which you want to calculate the sunset.
  • Time Zone Offset: Your local time difference from UTC (e.g., -7 for PDT, +1 for CET).

These inputs allow the calculator to account for Earth's axial tilt, orbital position, and local atmospheric conditions (refraction) to provide an accurate estimate.

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