What did the Moon look like on your birthday?

Choose a date to reconstruct its approximate lunar phase. The result stays in your browser; Lunar Probe does not store the date.

Astronomy, not astrology

This tool describes the physical illumination geometry of the Moon on a date. It does not assign personality traits, fortunes or astrological meaning.

Accuracy

The result uses a mean synodic-cycle approximation. It is appropriate for identifying the broad phase and approximate illumination but should not replace a precision astronomical ephemeris for historical timing research.