Day()

Syntax: Day(DateValue as Date) as integer

Day(date) Returns a value 1–31 representing the day of the month

Parameter: The DateValue must be a valid date.

Script: 
Sub Main
	Dim strDate As Date
	
	MsgBox Day(Now()) ' returns the current day
	
	strDate = #12/01/2013#
	MsgBox day(strDate) ' returns 12
End Sub

 

IDEAScript Language: