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# Moon phase, moonrise, and moonset

Tonight's moon phase, when it rises and sets, and the next full moon.
illumination at local noon · rise/set over the local day · 1900-2100CityCustom coordinatesSearch cities

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- The illuminated fraction and the named phase come from SunCalc’s lunar ephemeris (truncated ELP-2000/82 series); the eight phase names cut at ±0.02 around the exact quarters.
- The moon’s age in days multiplies the phase by the MEAN synodic month (29.53 days). True lunar months vary by around ±7 hours, so the age is labeled an estimate, the fraction is the exact number.
- Moonrise and moonset are the earliest of each across your LOCAL day. The search spans both UTC days the local day touches, so far-from-Greenwich places are not cut at midnight.
- The phase disc is a diagram (area = illuminated fraction, lit side by waxing/waning), not a render of the actual moon.

City list curated from GeoNames (geonames.org, cities500 database, CC BY 4.0), snapshot 2026-08-24, bounded to 151 major cities across six regions. Coordinates rounded to 2 decimals; ids are product slugs, not GeoNames ids.
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## More sun & moon tools

- [Sunrise & sunset](/sky/sunrise-sunset)
- [Golden hour](/sky/golden-hour)
[All sun & moon tools](/sky)

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