week of year
FEEL built-in function · FEEL date and time functions
week of year(date)
Returns the ISO 8601 week number of the date.
Parameters
| Parameter | Type | Description |
|---|---|---|
| date | date or date and time | the value to inspect |
Examples
week of year(date("2026-01-01"))
1
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week of year(date("2026-07-24"))
30
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Edge cases and null handling
week of year(date("2027-01-01"))
53
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week of year(date("2024-12-30"))
1
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Part of FEEL date and time functions: date arithmetic, the two kinds of duration, time zones, and every temporal function side by side.
Related functions
Defined by the OMG DMN 1.6 specification, chapter 10.3.4 (built-in functions).