Planetary transits compare positions in the moving sky with a person’s natal planets, chart angles and house placements. They are one of the main techniques in modern predictive astrology. A transit is not a new birth chart: it is a time-specific configuration read against an existing natal pattern.
Fast and slow transits
The Moon forms short-lived contacts measured in hours, while Mercury, Venus and Mars move through shorter periods of weeks or months. Jupiter and Saturn can emphasize themes over much longer intervals, and the outer planets may remain close to the same natal point for extended periods. The transit’s duration partly reflects the planet’s speed and possible retrograde loops.
Interpreting transit contacts
Begin with the natal planet’s role and houses. Then identify the transiting planet, the aspect and its orb. For instance, a transit of Saturn to natal Mercury may be read through communication, concentration and responsibility rather than as a universal problem. Transits to angles, luminaries and chart rulers are often prioritized over contacts to minor points.
Use a timing sequence
Study the applying phase, exact aspect and separating phase. Track repeated exact contacts caused by retrograde motion, and check whether several transits reinforce the same theme. Calendar dates should be calculated with a reliable ephemeris and time zone.
Return to Transits & Predictive Astrology for the larger framework of forecasting methods, or read the Astrology encyclopedia for natal fundamentals.
Planetary Transit Guides
Explore the meaning and timing of each planet’s transits through zodiac signs and houses, and the aspects they form to your birth chart.