Determines the day of the week from a date. Returns the ordinal for the day of the week, as an integer in the range 1 (Sunday) to 7 (Saturday).

dayOfWeek(date) → returns numeric

Member Function Syntax


dayOfWeek Argument Reference

date date

Date or datetime object (100AD-9999AD).
When passing a datetime object as a string, enclose it in quotation marks. Otherwise, it is interpreted as a numeric representation of a datetime object.

calendar string
Default: gregorian

CF2016u8+ Indicates whether the week starts on Sunday (gregorian) or Monday (iso)
  • gregorian
  • iso



Member function is available in CF11+.


Member function is available in Lucee4.5+. Lucee accepts an additional argument for timezone.

Examples sample code invoking the dayOfWeek function

Uses the dayOfWeek function to determine the day of the week

<cfset date = createDate(2010, 09, 08)>
<cfset result = dayOfWeek(date)>

Expected Result: 4

Fork me on GitHub