CFLib.org – Common Function Library Project

Description:
Calculates the number of business days between 2 dates. Holidays are not excluded. This count does not include the first day. So if you compare today (and today is Monday) to tomorrow, then your result is the difference (1).

Return Values:
Returns a number.

Example:

<cfoutput>
Number of work days between #DateFormat(CreateDate(2004,2,2),"dd-mmm-yyyy")# and #DateFormat(CreateDate(2004,2,10),"dd-mmm-yyyy")# is 
#businessDaysBetween(CreateDate(2004,2,2),CreateDate(2004,2,10))# day(s).
</cfoutput>

Parameters:

Full UDF Source:

/**
 * Calculates the number of business days between 2 dates.
 * 
 * @param date1      First date. (Required)
 * @param date2      Second date. (Required)
 * @return Returns a number. 
 * @author Harry Goldman (harry@icn.net) 
 * @version 1, April 10, 2008 
 */
function businessDaysBetween(date1,date2) {
    var numberOfDays = 0;
    
    while (date1 LT date2) {
        date1 = dateAdd("d",1,date1);
        if(dayOfWeek(date1) GTE 2 AND dayOfWeek(date1) LTE 6) numberOfDays = incrementValue(numberOfDays);
    }

    return numberOfDays;
}