The API for retrieving OHLC Quote does not take date as an input. My assumption is that the OHLC data is for the current day... or is it for the previous day session? Assuming that the OHLC Quote is for the current day, 1. What quote will it give before start of trading? Since there is no data to be given yet. 2. What quote will it give during the trading session, since the High, Low and Close are not yet known. 3. NSE takes some time to declare the Close after calculating VWAP. So at what time will the OHLC Quote start reflecting the proper CLose value after end of the session?