Timestamps on 1-minute candles are wrong, or maybe my assumption.
Assumption - candle for data between 11:25 and 11:26 will have timestamp of 11:25 (candle opening time, as I read at many places that Zerodha API generates candles named after opening time rather than closing time)
Reality - when I query at 11:26:05 I get the latest candle with timestamp 11:26.