Estimate the moon phase for any date, including lunar age, illumination, next major moon phase, waxing or waning status, and common astrology-style meanings for the moon cycle.
Date and time:
The calculator converts your selected date, time, and time zone into an approximate lunar cycle position.
Lunar age:
It estimates how many days have passed since the most recent new moon.
Moon phase:
The lunar age is matched to a moon phase such as new moon, waxing crescent, first quarter, full moon, or waning crescent.
A moon phase calculator is useful for checking the moon phase on a birth date, planning around new moons and full moons, tracking lunar cycles, and estimating moon phase meanings for astrology, gardening, journaling, or personal reflection.
This is a simplified estimate. Exact moon phase timing, moon sign, moonrise, moonset, and lunar distance require astronomical ephemeris data.
Moon phases describe the visible shape of the Moon as it moves through its cycle. In astrology-style use, the new moon is often connected with beginnings, the waxing moon with growth, the full moon with clarity and release, and the waning moon with reflection and completion.
A moon phase is the visible shape of the Moon from Earth, based on how much of the Moon’s sunlit side is visible.
A full moon cycle from new moon to new moon is about 29.53 days.
Lunar age is the number of days since the most recent new moon. A lunar age near 0 means new moon, while a lunar age near 14.8 means full moon.
This calculator gives an approximate moon phase estimate. Exact phase times may vary from astronomical almanacs and ephemeris software.