Indian equity indices ended on strong note with Nifty above 24,850 on August 18. At close, the Sensex was up 676.09 points or 0.84 percent at 81,273.75, and the Nifty was up 251.20 points or 1.02 percent at 24,882.50. About 2446 shares advanced, 1555 shares declined, and 160 shares unchanged.