Outer-Planet Transits vs Inner-Planet Transits

Transit Saturn at 6 degrees Capricorn is about two months from squaring a natal Sun at 8 Libra, while Mars crossing 8 Capricorn adds a four-day square inside that slower theme.

Every planet in a transit chart moves, but at very different speeds. The Moon circles the zodiac in about 27 days and the Sun in a year, while Saturn takes about 29.5 years, Uranus about 84, Neptune about 165 and Pluto about 248. Astrologers often sort the planets into personal planets (Sun through Mars), social planets (Jupiter and Saturn) and outer planets (Uranus, Neptune and Pluto). This article uses a simpler two-way split for timing: inner planets from the Moon through Mars, and outer planets from Saturn outward, with Jupiter as a middle case. The dividing line is a convention.

Speed decides what a transit can describe. A contact that lasts hours or days can map onto a mood, a conversation or an episode. A contact that lasts a year or more can only describe a long background condition, because nobody holds one mood for a year.

The comparison below uses the same 2-degree window for both groups, a 1-degree orb on each side of exact. Planet-by-planet figures for that window are in our guide to how long transits last.

Inner planets are often called triggers because their short visits can bring a longer theme into a specific day. That is a way of reading, not a mechanism, and a trigger can pass with nothing to notice.

• The Moon sets the tone of a day or an afternoon, which is why its contacts are usually left out of weekly planning.
• The Sun puts attention on an area for a day or two, once a year at any given degree.
• Mercury points to conversations, messages, errands and small decisions.
• Venus points to social moments, appreciation and questions of taste.
• Mars points to a push of energy, impatience or a wish to act.

A common comparison is climate and weather. Outer planets set the climate, the long theme that colors a stretch of years, and inner planets supply the weather, the changeable conditions inside it. Saturn is read for structure and responsibility, Uranus for restlessness and change of direction, Neptune for blurring and idealizing, and Pluto for deep reorganizing.

These are long themes and not predictions. Many people pass through outer-planet contacts and notice little, and the ones who do notice something usually notice it gradually.

Start with the slow layer, then add the fast one. This order keeps a passing contact from taking over the picture.

1. List the outer-planet contacts inside your orb, and write the theme of each in one sentence.
2. Note the dates of each pass, including retrograde ones.
3. Look for inner-planet contacts that touch the same natal point or the same moving planet, and mark their short windows on the same timeline.
4. Treat those short windows as days to pay attention, not as events.
5. Notice how many days involve neither layer, and do not force a reading onto them.

This example is constructed. Take a natal Sun at 8 degrees Libra, which is 188 degrees counting from the start of Aries. Libra begins at 180 degrees, so 8 degrees Libra is 188. A square is 90 degrees away, and 8 degrees Capricorn is 270 plus 8, or 278, which is exactly 90 degrees past 188.

Suppose transit Saturn is at 6 degrees Capricorn, 2 degrees short of exact and inside a 2-degree orb. At Saturn's average pace of about 12 degrees a year, or a degree a month, it needs roughly two months to reach exact. This is the slow layer, and its theme is the old question of duty against identity.

Now suppose Mars crosses 8 degrees Capricorn while Saturn is still in the window. At about half a degree a day, Mars spends about four days inside the same 2-degree window, forming its own square to the Sun. That is the fast layer, a few days when the theme could show up as impatience or a wish to act. The Saturn theme was there before Mars arrived and stays after it leaves.

Labels such as major and minor transits are conventions, and astrologers weigh them differently. A quick Mars contact is not automatically an event trigger, and a slow Saturn contact is not automatically felt. Slow contacts can be so gradual that they register as nothing more than a background condition.

The practical rule is to match your attention to the speed. Glance at fast contacts when you plan a day or a week, and review slow ones a few times a year.

A simple schedule keeps the two layers from crowding each other.

• Weekly: look at Mercury, Venus and Mars contacts to your chart.
• Monthly: check Jupiter and Saturn, including whether either is about to turn retrograde or direct.
• Quarterly: review Uranus, Neptune and Pluto, and update the notes on the slow theme.

Does it matter whether the natal planet is fast or slow? No. Speed belongs to the moving planet. A fast planet such as Mars can touch a natal Saturn, and a slow one such as Neptune can touch a natal Moon, so read the pair and then the speed of the planet that is moving.

Where does Jupiter fit? It sits between the groups. Its window lasts a few weeks and its stay in a sign about a year, which is why astrologers sort it differently from one source to the next.

Fast does not mean minor and slow does not mean strong; a quick contact can pass unnoticed and a slow one may barely register.