Sunrise & Sunset Calculator
Enter any latitude, longitude, and date to calculate sunrise, sunset, solar noon, and total daylight hours.
100% client-side · no upload
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Sunrise
🌇
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Sunset
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Solar Noon
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Day length
Times shown in your local browser timezone.
How to use
- Enter the latitude and longitude of your location (or click "Use my location").
- Select the date you want to calculate for.
- Sunrise, sunset, solar noon, and day length appear automatically.
Related time tools
常见问题
- Is the sunrise/sunset calculator free?
- Yes, completely free with no signup and no usage limits.
- Does my data leave my device?
- No. Solar calculations run entirely in your browser using astronomical algorithms. Nothing is sent to any server.
- Does it work on mobile?
- Yes. The tool is mobile-first and works on iPhone Safari and Android Chrome. Tap "Use my location" to auto-fill coordinates.