Estimate the nearest full moon, next full moon, days until or since full moon, lunar age, illumination, and full moon meaning for any selected date.
Date and time:
The calculator converts your selected date, time, and time zone into an approximate lunar cycle position.
Full moon estimate:
It estimates the nearest, previous, or next full moon using the average 29.53059-day moon cycle.
Full moon window:
It shows whether the selected date is inside a full moon window, such as within 24 hours of the estimated full moon.
A full moon calculator is useful for estimating full moon dates, checking whether a date is near a full moon, planning reflection or release rituals, tracking moon cycles, or reviewing astrology-style full moon themes.
This is a simplified estimate. Exact full moon timing, moon sign, moonrise, moonset, and lunar distance require astronomical ephemeris data.
The full moon is the peak of the lunar cycle, when the Moon appears fully illuminated from Earth. In astrology-style use, the full moon is often connected with clarity, emotional awareness, completion, release, visibility, and turning points.
A full moon happens when the Moon is opposite the Sun from Earth’s perspective and appears fully illuminated.
A full moon happens about every 29.53 days, which is roughly once per month.
The full moon usually occurs around lunar age 14.8 days, about halfway through the moon cycle.
This calculator gives an approximate full moon estimate. Exact full moon times may vary from astronomical almanacs and ephemeris software.