IF TEST = 1
{
  ASSIGN MyDateTime = #"{now}"
  ASSIGN MyBirthday = #"1/24/1973 10:42 PM"
}

//Returns the difference between two dates. The variable must contain a
//numeric value representing an OLE automation date/time. 

//The unit specifies the date part TO compare and date2 specifies the 
//date TO compare with the value from the variable. IF date2 is greater 
//than the value within the variable, the results will be positive. 

//Possible choices FOR unit are: week, day, hour, minute, and second. 

//Enclose the unit IN double or single quotes, or pass a variable which
//contains the unit name. The unit name is CASE sensitive.

//IF the difference is fractional, the RETURN value will be fractional 
//also. FOR instance, IF the variable contains the date “10/15/2009 6:00 AM” 
//and date2 is “10/16/2009 6:00 PM”, the result FOR unit day will be 1.5.

ASSIGN WeekDiff = datediff("week", MyBirthday, MyDateTime)
ASSIGN DayDiff = datediff("day", MyBirthday, MyDateTime)
ASSIGN HourDiff = datediff("hour", MyBirthday, MyDateTime)
ASSIGN MinuteDiff = datediff("minute", MyBirthday, MyDateTime)
ASSIGN SecondDiff = datediff("second", MyBirthday, MyDateTime)