Estimate the nearest new moon, next new moon, days until or since new moon, lunar age, illumination, and new 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.
New moon estimate:
It estimates the nearest, previous, or next new moon using the average 29.53059-day moon cycle.
New moon window:
It shows whether the selected date is inside a new moon window, such as within 24 hours of the estimated new moon.
A new moon calculator is useful for estimating new moon dates, checking whether a date is near a new moon, planning intentions, tracking lunar cycles, or reviewing astrology-style new moon themes.
This is a simplified estimate. Exact new moon timing, moon sign, moonrise, moonset, and lunar distance require astronomical ephemeris data.
The new moon is the beginning of the lunar cycle, when the Moon is not visibly illuminated from Earth. In astrology-style use, the new moon is often connected with fresh starts, quiet reflection, intention setting, planning, renewal, and planting seeds for the next cycle.
A new moon happens when the Moon is between Earth and the Sun, making the Moon appear dark or nearly invisible from Earth.
A new moon happens about every 29.53 days, which is roughly once per month.
The new moon usually occurs near lunar age 0 days, which marks the beginning of a new moon cycle.
This calculator gives an approximate new moon estimate. Exact new moon times may vary from astronomical almanacs and ephemeris software.