Yesterday, NYSE trades 9.9 millions shares and closes at $44.54. Bombay exchange trades 1.36 millions shares and close at Rupie 2395 that is equivalent to $45.52. At one hour before NYSE closed, INFY (NYSE) traded $2 below Bombay exchange closed price. Although Bombay is a less-dominant exchange than NYSE and two prices do not necessarily come to agreement on a given trading day, still the pricing descrepency were too large to ignore. That's why you see the last one-hour surge in NYSE.
Generally, I have a impression that Bombay exchange are more forgiving than NYSE and offers higher valuation to most IT stocks. I think I saw similar pull effect on last ER miss.