From a date/time object, determines the week number within the year.

An integer in the range 1-53; the ordinal of the week, within the year.

Date and time functions

Week(date)

DatePart

When passing date as a string, enclose it in quotation marks. Otherwise, it is interpreted as a number representation of a date.

<h3>Week Example</h3>
<cfif IsDefined("FORM.year")>
More information about your date:
<cfset yourDate = CreateDate(FORM.year, FORM.month, FORM.day)>
<cfoutput>
   <p>Your date, #DateFormat(yourDate)#.
   <br>It is #DayOfWeekAsString(DayOfWeek(yourDate))#, day
       #DayOfWeek(yourDate)# in the week.
   <br>This is day #Day(YourDate)# in the month of
       #MonthAsString(Month(yourDate))#, which has #DaysInMonth(yourDate)# days.
   <br>We are in week #Week(yourDate)# of #Year(yourDate)# (day
       #DayOfYear(yourDate)# of #DaysInYear(yourDate)#). <br>
   <cfif IsLeapYear(Year(yourDate))>This is a leap year
      <cfelse>This is not a leap year
   </cfif>
</cfoutput>
</cfif>