A timeline can significantly aid in effective UPSC exam preparation by providing a structured overview of key events and topics. Creating a chronological list of historical events, governance milestones, and significant movements can help aspirants understand interconnections and causality. This visual representation facilitates easier recall during revisions, allowing candidates to track progress and identify weak areas. Regularly updating timelines with current affairs strengthens the integration of historical context with ongoing events, fostering a comprehensive understanding of the syllabus and enhancing recall during exams.