daystart - script and chart function

This function returns a value corresponding to a timestamp with the first millisecond of the day contained in the time argument. The default output format will be the TimestampFormat set in the script.

Syntax:  

DayStart(time[, [period_no[, day_start]])

Return data type: dual

Arguments:  

Argument Description
time The timestamp to evaluate.
period_no period_no is an integer, or expression that resolves to an integer, where the value 0 indicates the day that contains time. Negative values in period_no indicate preceding days and positive values indicate succeeding days.
day_start To specify days not starting at midnight, indicate an offset as a fraction of a day in day_start. For example, 0.125 to denote 3 AM.