Benchmark Sensex and Nifty closed at new lifetime high levels on Monday on foreign fund inflows and buying in index majors HDFC Bank and Reliance Industries. The 30-share BSE Sensex jumped 529.03 points or 0.80 per cent to settle at its new all-time closing high of 66,589.93. During the day, it climbed 595.31 points or 0.90 per cent to hit its lifetime intra-day peak of 66,656.20. The NSE Nifty went up by 146.95 points or 0.75 per cent to end at a new record high of 19,711.45. During the day, it rallied 167.35 points or 0.85 per cent to its record intra-day high of 19,731.85.