Vimshottari is a popular system of Dasha in Vedic astrology, used to predict the timing of events in a person's life. It divides a person's life into periods ruled by different planets, each lasting a specific number of years. The total cycle lasts 120 years, with each planet having a designated time frame based on its significance in the individual's birth chart. The Vimshottari Dasha system is based on the position of the Moon at the time of birth. Each planet's influence is determined by its placement in the natal chart, allowing astrologers to analyze life events and transitions. This method helps individuals understand their life cycles and potential challenges.