Why Jaipur's clock times run late
India Standard Time is set for 82.5° E. Jaipur lies at 75.79° E, about 6.7° farther west, so the sky turns past Jaipur roughly 27 minutes later than past the IST meridian. That is why Moon and Sun events in Jaipur fall later on the clock than in eastern India on the same date.
Source: GeoNames — Jaipur