Square in astrology

What a square means at its simplest

Ninety degrees is a right angle, and the symbol □︎ is a drawn square. Two planets at that distance are in signs that share the same modality but not the same element, so they are built to act in the same way (start, hold or adapt) with different tools. Aries and Cancer, for instance, are both cardinal, and both want to initiate, but one is fire and the other water. That mismatch is the source of the friction the tradition describes.

With the commonly used orb of up to 8 degrees, a square covers 82 to 98 degrees. Some astrologers narrow it to 6 or 7.

Signs that square each other, by modality

Within each modality the four signs form a cross, and each sign squares the two signs on either side of it in the cross.

Three ways astrologers read a square

1. 1. As a source of drive

   Squares are the aspects that push. The older view treats them as the part of a chart that will not let a person stay comfortable, and a common modern reading is that a chart's achievements often trace back to its squares.

2. 2. As a recurring tension

   A natal square is read as a lifelong pull between two needs, such as security and adventure. It rarely resolves for good, and the practical work is learning to alternate between the two sides.

3. 3. As a trigger when it is transiting

   A transiting planet that squares a natal planet is read as a moment of pressure or decision. Because the angle is exact for a short time only, the effect is described as a period and not as a condition.

How a square differs from an opposition

Both are called hard aspects, and they are easy to confuse. An opposition puts two planets across from each other, so each is in plain view of the other, and the usual lesson is balance. A square puts them at right angles, where neither can see the other directly, so the pressure tends to come from a blind spot instead of a face-off. The tradition adds that an opposition is felt as other people, whereas a square is felt as obstacles and circumstance.

A practical consequence is that squares are said to produce action. A person facing an opposition can talk it over; a person facing a square has to do something, because the situation does not settle by itself.

Squares in the Moon's cycle

The monthly lunar cycle contains two squares. At the first quarter the Moon is 90 degrees ahead of the Sun, and at the last quarter it is 90 degrees behind. They are the two half-lit phases, and astrologers read both as turning points in the cycle, one of building and one of release, even though the Moon looks calm.

The T-square and the grand cross

When two planets are in opposition and a third squares both of them, the three form a T-square, and the planet at the point of the T is called the apex. The tradition treats the apex as the outlet for the tension between the other two. If a fourth planet fills the empty corner so that four planets square and oppose one another, the pattern is a grand cross, and it sits on one of the three crosses in the table above.