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Sunrise Sunset Calculator

Estimate sunrise and sunset times for any city and date using latitude and longitude. Includes daylight length. Free online sun time calculator. All processing runs locally in your browser. Your data is not uploaded to any server. 100% Local Processing

How to Use

Get approximate sunrise and sunset times for a city on any date, computed from its coordinates with the standard NOAA solar equation.

Steps

1. Pick a city, or keep the default.
2. Choose a date, or leave it empty for today.
3. Click Calculate and read sunrise, sunset and daylight length.

What the result shows

• Sunrise and sunset as local wall-clock times.
• Solar noon and civil twilight start and end times.
• Total daylight hours and minutes.
• The zenith-based noon for the location.

Features

• Uses a compact NOAA approximation, accurate to a few minutes.
• Works for any date, past or future.
• All calculation is local in the browser.
• All processing runs locally in your browser. Your data is not uploaded to any server.

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