Effective time management techniques on UPSC exam day include strategic planning, prioritization, and maintaining composure. Candidates should familiarize themselves with the exam layout and allocate appropriate time for each section. Prioritizing questions based on confidence and difficulty can optimize performance. Additionally, practicing time-bound mock tests before the exam helps build stamina and enhances speed. During the exam, candidates should keep track of time, avoiding the temptation to dwell too long on any particular question. This disciplined approach ensures they can complete the exam within the allotted timeframe.