Transits
Your birth chart holds still. It is a photograph of one particular sky, the sky of the day you were born, and that photograph never changes again. The sky above it keeps moving, though. The planets carry on around their circuit and, as they go, they line up one by one with the fixed points of your chart. Those alignments are called transits, and they are how astrology talks about time.
A transit does not bring you anything from outside. It describes a climate: what kind of weather is sitting over a given area of your life, and for how long. It changes the colour of things, not the substance of who you are. Whatever a season like that brings out was already written into your chart as a possibility, and the transit only says when that possibility gets touched, and in what tone.
That is why you will never find the words "this will happen" here. A transit is not a verdict and it is not an oracle. It is a way of recognising the moment you are in while you are still in it, and of working out what it is asking of you. The same configuration takes two different shapes in two different people: it depends on the chart it lands on and on how that person is living.
Speed matters most of all. The fast planets pass in a few days and make up the daily background, the tone of a week. The slow planets stay on the same stretch of sky for years and draw the real seasons of a life: the phases in which something ripens, settles, or breaks. They give you the plot, and the fast ones lay the details and the exact timing over the top.
The chapters look first at how a transit works and how to read one without sliding into fatalism, then at the six planets genuinely worth following: Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. One by one, their character, their rhythm, and what the passage feels like when it arrives.