A transit is the current position of a planet in the sky as it forms an aspect to a planet or angle in your natal chart. The natal chart is fixed at birth. The planets keep moving. Wherever a moving planet currently sits, if it forms an angle to one of your natal positions, that natal position is being "activated."
Transits describe the external weather of your life. Where progressions and solar arc describe the slow movement of your inner self through symbolic time, transits describe the literal current pressures of the cosmos meeting the literal positions of your natal chart.
Reading a transit involves four pieces of information: (1) which transiting planet, (2) which natal planet or angle it is aspecting, (3) what aspect type they form, and (4) how close the transit is to exactness. Each of these is part of the interpretation.
Transits are the weather. Your natal chart is the landscape. The transit is what is currently raining on what.
| Aspect | Angle | Quality | Felt Intensity |
|---|---|---|---|
| Conjunction | 0° | Fusion, merging | Highest |
| Opposition | 180° | Tension, polarity | High |
| Square | 90° | Friction, growth | High |
| Trine | 120° | Flow, ease | Moderate |
| Sextile | 60° | Opportunity | Moderate |
Conjunctions and squares are the hardest-hitting aspects, in part because they demand resolution. Trines and sextiles are softer; they offer possibility but require initiative to be used. Oppositions create polarity that the chart-holder either oscillates between or learns to integrate.
The slower the transiting planet, the more important the transit. This is the single most useful interpretive rule.
Mercury, Venus, and Mars transit quickly — days to weeks. These transits affect daily mood, communication, attraction, and immediate energy, but they rarely produce defining events on their own.
Jupiter transits last a few months in active form. Jupiter contacts to personal planets often correlate with openings, expansions, and the arrival of opportunities.
Saturn transits last 6–12 months. Saturn contacts to personal planets are the workhorses of astrological prediction — they reliably correlate with periods of maturation, structural challenge, and the consolidation of authority.
Uranus, Neptune, and Pluto transits last 1–3 years because of multiple retrograde passes. These are the transits that define chapters of life. An outer-planet hard aspect to a personal planet or angle is a chapter, not an episode.
See your current transits: Most birth-chart calculators include a "current transits" view that shows where the planets are now relative to your natal chart. Run your free birth chart and look for the transit option.
Every transit moves through three phases: applying, exact, and separating.
Applying is when the transiting planet is approaching the natal aspect — the orb is closing. This is the phase when the situation is building, energy is gathering, the theme is becoming visible. Often the most psychologically charged phase: the anticipation, the buildup, the sense that something is coming.
Exact is when the transit reaches the precise aspect angle. This is typically the peak of intensity and often correlates with the climactic event of the transit cycle. For outer-planet transits, the exact pass is the moment when the chapter's defining event occurs — or, sometimes, when the situation finally becomes undeniable.
Separating is when the transiting planet has passed the exact aspect and is moving away. The situation is processing, integrating, settling. The full weight of what happened becomes apparent only in the separating phase. This is the phase of consolidation.
For long outer-planet transits with multiple retrograde passes, this three-phase structure applies to each pass separately. The first applying-exact-separating cycle introduces. The retrograde pass deepens or reveals. The third pass integrates or finalizes.
When a planet retrogrades while in the orb of a natal aspect, it typically crosses the exact degree three times. The first pass is direct, the second is retrograde (moving backward), and the third is direct again. The three passes can span 9 to 18 months for outer-planet transits.
Each pass usually corresponds to a different phase of the same theme. The first pass introduces a question or situation. The retrograde pass turns the question inward, surfaces hidden material, or undermines what seemed solid. The third pass forces a resolution or final form.
Famous examples: people who go through multiple Saturn passes during a Saturn-square-Sun transit often describe the first pass as "something hard arrived," the retrograde as "everything I thought was certain unraveled," and the final pass as "I finally accepted what was being asked." The triple structure is the work of a slow-planet transit.
The aspect tells you the quality. The transiting planet tells you the energy. The natal planet tells you what part of you is being activated. But the house the transit happens in tells you which life domain is most affected.
A Saturn transit to your natal Sun describes maturation of your conscious self. But Saturn transiting through your natal 7th house describes maturation specifically of your partnerships. Saturn transiting through your 10th house describes maturation of your career and public role. Same Saturn-to-Sun aspect; completely different lived experience depending on which house both planets fall in.
The house is the where. Without the house, the transit interpretation is generic. With the house, it becomes specific.
In Chinese Bazi, the closest analog to a transit is the annual pillar — the year's heavenly stem and earthly branch as they interact with the natal chart. Each year, the annual pillar combines with the natal chart in specific clash, harmony, or combination patterns, producing the year's energetic signature. The Bazi annual pillar functions like a year-long transit.
In Hermetic Alchemy, transits correspond to the operations — the specific alchemical procedures applied to the prima materia at different stages. Each transit is an operation: calcination (Saturn squares burning away the old), dissolution (Neptune contacts dissolving boundaries), conjunction (Jupiter contacts uniting opposites). The chart is the laboratory; the transits are what is currently being done in it.
Reading a transit well requires four pieces of information: which planet is transiting, what aspect it makes, what natal point it hits, and what house contains both. The slower the transiting planet, the more important the transit. The tighter the orb, the more exact the timing. The retrograde triple-pass extends and deepens slow-planet transits across many months. Once you can read your own transits, you can stop being surprised by the texture of your own life.