What is Day/Night Cycle Visualizer?
The Day/Night Cycle Visualizer calculates and displays sunrise, sunset, solar noon, and twilight times for any location and date. A visual arc shows exactly how the sun moves through the sky so you can plan photography, travel, or outdoor activities.
How to use
- Enter a city name or coordinates, or click the map to set your location. The tool auto-detects your current position if you allow geolocation.
- Pick a date to see the full day/night cycle, including civil, nautical, and astronomical twilight periods shown as color bands.
- Compare daylight hours across different dates using the timeline slider, and export the data for any date range.
Result
A photographer planning a golden-hour shoot in Reykjavik in June sees that sunrise is at 3:02 AM and sunset at 11:58 PM — nearly 21 hours of daylight — and picks the optimal 30-minute window.
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