Free tool · Lunar return
Lunar Return Calculator: the next one.
This tool computes your next lunar return: the instant the transiting Moon returns to the exact longitude it held at your birth, which happens about every 27.3 days. It shows the date and time, and where available the return Ascendant and a planet table for the chart cast at that moment.
Method: see how Shymea calculates.
A lunar return chart is a monthly counterpart to the solar return. Because the Moon moves about 13° a day, the return moment is sensitive to the natal Moon degree, and therefore to the birth time. If your time is unknown the result can be off by several hours.
How this is calculated
We compute the natal Moon longitude from your birth data, then search forward from today for the instant the Moon's tropical longitude matches it, and cast a chart for that instant at your birthplace from the JPL DE ephemeris.
Full method notes are on the methodology page.
Common questions
- How often does a lunar return happen?
- Every sidereal month, about 27.3 days, so twelve or thirteen times a year.
- Is the birth time important?
- Yes. The natal Moon moves about half a degree an hour, and the return moment shifts by roughly the same hour.
Go deeper
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Positions are computed from the JPL DE442 ephemeris in the Tropical zodiac with Placidus houses. Readings are educational, drafted from the computed factors and edited by the Shymea team; they are not the work of a named practising astrologer and are not medical, legal or financial advice. See the editorial policy.