Moon Reckoning
Water sign, Cardinal

The Moon in Cancer

The Moon rules Cancer, which makes this its own sign and the strongest position of the twelve. It crosses in about two and a half days each month.

  • Ruled by the Moon itself
  • The Moon rules here
  • About two and a half days a month

The Moon in Cancer

Alan Leo, Astrology for All, 1899. Public domain, and the full text is readable online.

In a birth chart

The Moon at home: house, family, memory, and the mood of the room.

Leo describes a personality fond of ease and comfort, homely in its habits and attached to its family, and attached above all to the mother, whom it may resemble. It is friendly and sociable, imaginative, emotional and changeable.

The sensitivity is the whole of it. He says the native is influenced greatly by their surroundings, falls in readily with the ways of others, adopts their suggestions, and takes their colouring. He adds that such a person is most fortunate acting on someone else's advice, which reads as a limitation until you notice he means it as a description of how the Moon works.

The doctrine of dignities, standard in Western astrology since the Hellenistic period

Where the tradition places it

This is the Moon's own sign.

Each planet has signs the tradition considers its home. The Moon has one, and this is it. Everywhere else it is a guest and takes the colour of the house; here it is doing what it does by nature, which the tradition reads as holding, remembering and sheltering.

That is also why the difficulties of this position are its own qualities carried too far: a mood that fills the whole room, and a memory that keeps what it would be easier to put down.

The doctrine of the elements and the modes, and habit built on top of it

What these days are used for

Home, family and what is already yours.

  • WaterHeldWater holds. The tradition gives these days to feeling, memory and what is not said, and to anything that has to be finished rather than begun.
  • CardinalOpeningA cardinal sign opens a season, so the two and a half days are read as an opening: the impulse is to begin.

The tradition gives these days to holding rather than starting, and reads the mood of a room as unusually catching while they last.

This is tradition and habit, not a measured effect. It is here because it is what the sources say, and each part carries the name of the source it came from.

The next six Cancer Moons

Enters CancerTimeLeaves for LeoTimeStays

The three that come up most

Questions people ask

How long is the Moon in Cancer?

About two and a half days each month. The exact length changes a little because the Moon's speed changes, and the table above gives the real figure for each crossing.

Is a Cancer Moon the same as being a Cancer?

No. A Cancer Sun means the Sun was in Cancer at your birth, which is late June to late July. A Cancer Moon can happen in any month of the year.

Does the Moon sign depend on where I was born?

The sign itself is the same everywhere at the same moment, because it is measured from the centre of the Earth. What changes with your place is the local clock time it starts and ends, which is exactly what decides your sign if you were born near a crossing.

Positions and times are calculated in your browser with an open astronomy library and match published ephemerides to the minute. The birth chart reading is written from Alan Leo, Astrology for All, 1899, which is in the public domain. The dignities and the doctrine of the elements are standard traditional astrology. Tradition is labelled as tradition throughout, and the sources page sets out what is calculated and what is not.