Yeah, that's correct because if you request for 15-minute candle data at it's start,here i.e 09:45 AM, it will have same values as of 1-minute data of 09:45 AM, as current available data is only for 1st minute to form a 15minute candle.
Are you looking for 15 minutes of data for 09:30:00 to 09:44:59AM?
Then you need to look for 9:30 AM 15 minute candle.15 minutes candle are formed in below period, 09:15 to 09:29:59 ,09:30:00 to 09:44:59,etc.
Yeah, that's correct because if you request for 15-minute candle data at it's start,here i.e 09:45 AM, it will have same values as of 1-minute data of 09:45 AM, as current available data is only for 1st minute to form a 15minute candle.
this solved the issue..
thanks a lot