The planets in the sky are in constant motion. Some of these move very quickly such as Mercury and Venus. Others, such as Pluto, move very slowly. In any case, their positions are never the same.
The transit chart show the transits that are the aspects formed at a given time between the position of the planets in your natal (birth) chart and the position of the transiting planets. Transits are one of the main techniques used by Astrologers to make predictions.
There aren’t really ‘good’ or ‘bad’ transits. All transits bring you something new, new challenges, a question, a greater understanding of yourself and of your resources and talents. The transit analysis can help you determine at a given time, where you stand in your journey toward personal growth.