This is weird. The time in Bombay is offset from New York by 9 and a half hours. When it’s 12 PM in New York, it’s 9:30 PM in Bombay. This page describes the reasoning behind this half-hour offset. Apparently, it’s more accurate and gets closer to making noon the time when the sun is highest in the sky. Even more extreme is Nepal and Bangladesh, which have 15 minutes offsets.