Date & Time Tools
Sunrise / Sunset Calculator
Estimate sunrise and sunset times for any location and date.
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What is Sunrise?
A sunrise/sunset estimator based on the standard NOAA solar calculations — no API calls, all math runs locally.
How it works
The tool computes the sun's declination and the hour angle at the horizon using the date and coordinates, then converts to local time via the location's UTC offset.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Realistic sample
Paste or type any realistic input — the tool computes the result locally and instantly.
Common mistakes
Treating it as weather-accurate
This is an astronomical estimate using the standard solar-position algorithm; local terrain and atmospheric conditions can shift actual times by minutes.