CFLib.org – Common Function Library Project

Description:
Returns the ordinal for the day of the week for the specified date/time object according to ISO standards. ISO standards use Monday as the first day of the week as opposed to CF's built in DayOfWeek() function, which uses Sunday as the first day.

Return Values:
Returns an integer between 1 and 7.

Example:

<CFOUTPUT>
Today is day #ISODayOfWeek(Now())# of the week
</CFOUTPUT>

Parameters:

Full UDF Source:

/**
 * Returns the ordinal for the day of the week for the specified date/time object according to ISO standards.
 * 
 * @param date      Date time object 
 * @return Returns an integer between 1 and 7. 
 * @author Rob Brooks-Bilson (rbils@amkor.com) 
 * @version 1, August 17, 2001 
 */
function ISODayOfWeek(date)
{
  if (DayOfWeek(date) EQ 1) 
    Return 7;
  else 
    Return DayOfWeek(date)-1;
}