CFLib.org – Common Function Library Project

Description:
Returns the number of days left before Christmas day of the current year. If Christmas has passed, returns the number of days till next year's Christmas.

Return Values:
Returns a number.

Example:

<cfoutput>Are you Ready?  ONLY #DaysTillChristmas()# days till Christmas!</cfoutput>

Parameters:

No arguments.

Full UDF Source:

/**
 * Returns an integer of the days left before Christmas.
 * Version 2 by Ken McCafferty
 * 
 * @return Returns a number. 
 * @author Larry Juncker (ljuncker@aljcompserv.com) 
 * @version 2, October 4, 2002 
 */
function DaysTillChristmas() {
    var ChristmasDayOfYearThisYear =
DayofYear(CreateDate(Year(Now()),12,25));
    var ChristmasDayOfYearNextYear =
DayofYear(CreateDate(Year(Now()) + 1,12,25));
    var TodaysDayOfYear = DayofYear(Now());
    var DaysThisYear=DaysInYear(Now());
      //Christmas coming
    if (ChristmasDayOfYearThisYear gt TodaysDayOfYear){
       return ChristmasDayOfYearThisYear -
TodaysDayOfYear;
    }
     //Christmas has passed
    if (TodaysDayOfYear gt ChristmasDayOfYearThisYear){
     return DaysThisYear-TodaysDayOfYear +
ChristmasDayOfYearNextYear;
    }
        
    return 0;
}