It supposed recognize it. please see the below chart. since i have set it "START time of interval with respect to trading hours mentioned in intraday settings, it supposed to pick the first candle title as 9.15 start time
John bhai, you need to read all the Documentation for AB
The Day session (RTH) just tells AB to include all candles having that time. (9:15 to 15:30). any candle outside that is not plotted.
Now this will work,
only if, in Filtering you select "Show Day session." or Day-night.
As selected by you,
show 24hrs, the above RTH has no effect at all.
Candles from 9:10 or 15:40 pre-open post-market, all will be visible.
By selecting 9:15, AB will not modify your data to start at 9:15, if there is no candle till 9:20, then there will be blank bars from 9:15 to 9:20 and they will just be omitted and no plot.
Last candle will be previous day immediately followed by 9:21 new day in your 1m chart.
From preferences START-TIME, this will show the start-time of the interval computed from RTH, not the Data you send.
so if you open 5m chart, all bars will be, 9:15, 9:20, 9:25 and so, there must be atleast one data quote for bar to be plotted.
If NEST gave data quote at 9:17, 9:18 and so on, you will still see 9:15 as bar Start Time which is logically right.
On 1m Chart, you will not have any bar of 9:15 if there is no quote of that time.
Anyway, just wanted to say that AB will not modify quotes, it uses as rec'd and displays according to settings.