Transit chart
Transits are the movements of the planets currently traveling through the sky (or on a chosen date) across the planets, angles and houses of your birth chart. Your birth chart is fixed, while the planets keep moving. A transit chart lays this movement over your birth chart to interpret which themes come up and when. For example, transiting Saturn forming a conjunction with your natal Sun describes a period in which themes of responsibility and structure come to the fore.
The weight of a transit depends on the speed of the planet. The Moon describes daily fluctuations, and the Sun and Mercury weekly ones; transits of slow planets such as Jupiter, Saturn, Uranus, Neptune and Pluto last for months, sometimes years, and so mark periods of life. Well-known periods such as the Saturn return, the Jupiter return and the Uranus opposition are examples of these slow transits. Transits are usually tracked with a tight orb of roughly 1 to 3 degrees. Transit interpretations do not offer predictions; they provide a framework for the likelihood of certain themes coming up, and how events unfold depends on a person's attitude and circumstances.
