Note: Times are displayed in UTC. This uses a simplified solar position algorithm; actual times may vary by a few minutes.
For negative latitudes (Southern Hemisphere), enter a negative value. For western longitudes, enter negative.
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About Sunrise/Sunset
Working with this task no longer requires installing heavy desktop software — Sunrise/Sunset runs entirely in your browser, instantly. Processing runs locally in your browser using modern Web APIs. Nothing is uploaded, nothing is logged, and there is no quota to worry about for casual use. If you find yourself doing this regularly, the rest of the utility suite covers most adjacent tasks with the same approach.
When you'd reach for Sunrise/Sunset
You're cleaning up a folder of files that accumulated over a project and need to standardize them.
Designers, writers, and developers wrapping up deliverables.
Drop each file in, copy the output, move on.
You're on a public or shared machine and don't want to leave traces of what you're working on.
Travelers, contractors, anyone working from a friend's computer.
Nothing is uploaded, nothing persists if you're not signed in.
You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.
Marketers and ops people whose primary tool is metered.
Stay productive without burning credits.
You need to handle a one-off task right before a meeting and don't have time to install anything.
Anyone working remotely on a borrowed or restricted machine.
Open the page, get the result, paste it into your doc — under a minute.
Frequently asked about Sunrise/Sunset
- What browsers does Sunrise/Sunset support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
- Does Sunrise/Sunset work on mobile?
- Yes, Sunrise/Sunset is fully responsive and tested on iOS Safari and Android Chrome.
- Is Sunrise/Sunset really free?
- Yes — Sunrise/Sunset is free for unlimited personal use, with no account required and no watermark on the output.
- Are my files uploaded to a server when I use Sunrise/Sunset?
- Sunrise/Sunset processes everything in your browser using local APIs. Your files never leave your device.
- Will Sunrise/Sunset change my original file?
- Never. Sunrise/Sunset only reads your input file and produces a new output file.