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Week
Last update:
May 18, 2026
Description
From a date/time object, determines the week number within the year.
Returns
An integer in the range 1-53; the ordinal of the week, within the year.
Category
Function syntax
Week(date)See also
Parameters
Parameter | Description |
date | (Required) A date/time object in the range 100 AD-9999 AD. |
| calendar | (Optional) Values are either "iso" or "gregorian". |
Usage
When passing a date as a string, enclose it in quotation marks. Otherwise, it is interpreted as a number representation of a date.
Example
<cfscript>
myDateTime = now();
WriteOutput(week(myDateTime & "<br/>"));
</cfscript>Output
45
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