Syntax: DateDiff(Interval as String, Date1 as Date, Date2 as Date, Optional DayOfWeek, Optional WeekOfYear) as Long
Parameters:
Interval - There are 10 different types of intervals. Depending on the interval the DateDiff() well return the number of units in the Interval. Below is a list of the 10 items. In the script below I used constants to better define them.