Sunrise & Sunset Calculator
Get exact sunrise, sunset, solar noon, and twilight times for any location and date.
Quick Presets
About This Calculator
This tool calculates sunrise, sunset, solar noon, and civil twilight times for any location on Earth using the standard astronomical solar position algorithm. Enter latitude and longitude in decimal degrees (negative for south and west), or click "Use My Location" to auto-fill your GPS coordinates.
The algorithm is based on the Julian Date system and accounts for atmospheric refraction (0.833°) so the computed sunrise and sunset match what you actually observe on the horizon. Civil twilight (dawn and dusk) is calculated at −6° solar elevation — the moment when the sky begins to brighten before sunrise and fully darkens after sunset.
Locations above the Arctic Circle or below the Antarctic Circle may experience polar night (sun never rises) or the midnight sun (sun never sets) at certain times of year. The calculator detects and reports these conditions.
All calculations run entirely in your browser. No location data or inputs are ever sent to a server.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Sunrise & Sunset Calculator really free?
Yes. Sunrise & Sunset Calculator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Sunrise & Sunset Calculator upload my data?
No. Sunrise & Sunset Calculator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Sunrise & Sunset Calculator is ready to use on desktop or mobile.
Does Sunrise & Sunset Calculator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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