monthname - script and chart function

This function returns a display value showing the month (formatted according to the MonthNames script variable) and year with an underlying numeric value corresponding to a timestamp of the first millisecond of the first day of the month.

Syntax:  

MonthName(date[, period_no])

Return data type: dual

Arguments:  

Argument Description
date The date to evaluate.
period_no period_no is an integer, which, if 0 or omitted, indicates the month that contains date. Negative values in period_no indicate preceding months and positive values indicate succeeding months.