Luna is the second brightest of the seven planets honoured in ancient astrology, and the nearest one to Earth.  The zodiacal orientation of the Moon is thought to influence one’s emotional and intuitive disposition.  The Moon embodies the mundane feminine influence, whereas the Sun typifies the mundane masculine influence.  Although actually a satellite of Earth in cosmological terms and not a planet, it holds a special status because planets were believed to orbit the Earth in ancient times, and the Moon is the only celestial body which actually does orbit the Earth.

Luna, like Sol, is attributed rulership over only one astrological sign.  For the Moon, this sign is Cancer, the cardinal sign for elemental water, all the more appropriate, since the Moon is chiefly responsible for the ebb and flow of the oceanic tides.  In ancient times, this same lunar influence over oceans, when applied to the human body (which is itself at least 75% water), was believed to be responsible for bouts of radical or even criminal behaviour in otherwise seemingly ordinary people.  Because of Luna’s suspected involvement, this behaviour was termed lunacy, and its victims, lunatics.  Some scientific minds of our day may actually embrace the possibility that some as yet unmonitored microtidal activities within the human body may coincide with and perhaps may even be the result of lunar gravitational influences.

The zodiacal colour of the Moon is silver, but violet is the colour of the lunar kabbalistic sefirah, Yesod (Foundation).  Silver (L: argentum; Heb: kesef) is the alchemical metal of the Moon.

The day of the week assigned to the Moon is Monday; Romance languages bear the Latin form (Luna) in their nomenclature for Monday: