If you own the NeuroShell DayTrader you have the option to select the first time and last time data is displayed on the chart and used in all calculations.
To specify the start and end time, go to the Format menu and choose Format Chart, the Dates tab, and then check the box that says Restrict data loaded to a specific time range. Enter the start and end time. If you want to use an overnight time range, set the start time after the end time. For example start at 4 p.m. and end at 9:30 a.m.