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# Sky tools

Sunrise and sunset with every twilight phase, golden and blue hour windows, and the moon's phase, rise, and set — for a curated city or your own coordinates. The astronomy is SunCalc, the city list is GeoNames, and every time is rendered on the clock of the place you pick. Nothing is looked up online.

- [Sunrise & sunset

Every twilight phase of one day — dawn to dusk, on the place's own clock.
](/sky/sunrise-sunset)
- [Golden hour

Golden and blue hour windows — altitude-crossing boundaries, durations included.
](/sky/golden-hour)
- [Moon phase

Illumination, named phase, moonrise and moonset, and the next new and full moons.
](/sky/moon-phase)

3 tool s · everything is computed locally, nothing leaves your device.

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Canonical HTML: https://nutter.tools/sky
Markdown version: https://nutter.tools/sky/index.md
Plain-text version: https://nutter.tools/sky/index.txt
Agent index: https://nutter.tools/llms.txt