In this research paper, we have created birth charts of Bharatha, Lakshmana and Shatrughna based on Sage Valmiki’s Ramayana, and Lord Sri Rama’s birth char ^[24]. Further, we have calculated transit planetary placements for Bharatha, Lakshmana and Shatrughna on the day of King Dasaratha’s death. We have identified longevity and maraka planets for King Dasaratha based on Bharatha, Lakshmana and Shatrughna’s transit planetary placements charts and analysed their effects with the help of Brihat Parashara Hora Shastra and found that all planets inflicted death upon King Dasaratha.