(Some) Time Bars are misrepresented when "use instrument settings" is selected

[astra]

This is an important issue for me.
- Open a chart of a US market instrument that opens at 9.30 EST (ES,YM etc).
- Select 20 minute period
- Select <Use Instrument Settings> for a session template

The first candlestic that prints is the 9:50 then 10:10, 10:30 and so on until the end of the session. This is a misrepresentation of the 20 min bar. The 1st 20 minute bar should always close at :20 min , the 2nd at :40 min and 3rd at :00 min of the hour.

There is no problem with the 5, 10, 15, 30 min bars because they touch both the :00 and :30 min of the hour but there is problem with the 4, 12 and 20 min bars. In the above example the first bar of the session should be a 10 min bar and then normallly 20 min bars.

It also affects instuments when markets open at time different from :00 min of an hour (maybe :15 and so on).

[NinjaTrader_JoshP]

astra,

Those would not be 20 minute bars then. A 20 minute bar chart represents a time of 20 minutes for every single bar. What you are suggesting is truncating the beginning bar which is not the way NT builds bars. If you still desire those exact timestamps for your bars, you can try creating yourself a new session template ending on :20, :40, etc. to achieve the effect you want.