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AsteriaStar
Night Sky Platform

Moon Phase & Position

The current Moon phase and illuminated fraction, computed from public-domain astronomical formulae and timestamped, plus location-aware moonrise, moonset, transit, and the Moon's altitude and azimuth for any latitude and longitude. Your location is used only for the calculation and is never stored.

Night SkyComputed (source-backed calculation)

Current Moon phase

Computing current Moon phase…

Moonrise, moonset & position

Computed

Privacy: your location is used only for this calculation and is not stored. No browser geolocation or IP lookup is used — coordinates come only from what you type. Leave the date blank for the Moon's position right now.

The Moon phase and illumination above are global. Enter a latitude and longitude to compute moonrise, moonset, transit, and the Moon's altitude and azimuth for your location — nothing is shown until you do, and no location is assumed.

The phases of the Moon

The Moon cycles through its phases every 29.530588853 days (the synodic month). These are timeless facts; the current phase and illumination — and, for your location, moonrise, moonset, and the Moon's position — are computed above from public-domain formulae and timestamped.

New Moon
The Moon is between Earth and the Sun; its night side faces us and it is invisible.
Waxing Crescent
A growing sliver visible in the west after sunset.
First Quarter
Half-lit; highest in the sky at sunset.
Waxing Gibbous
More than half lit and still growing.
Full Moon
Fully lit; rises at sunset and sets at sunrise.
Waning Gibbous
More than half lit and shrinking; rises after sunset.
Last Quarter
Half-lit; highest in the sky at sunrise.
Waning Crescent
A shrinking sliver visible in the east before sunrise.

Related in the Knowledge Graph

The Moon
The Sun

Sources & references

The primary and reference sources this topic draws on.

  • US Naval ObservatoryUnited States Naval Observatory

    Precise time, almanac data, Sun/Moon rise-set, and phases.

  • NASA JPLJet Propulsion Laboratory / Solar System Dynamics

    Orbital data, ephemerides, and small-body parameters for planets, asteroids, and comets.