WorksheetFunction.IsoWeekNum method (Excel)
Returns the ISO week number of the year for a given date.
expression.IsoWeekNum (Arg1, Arg2)
expression A variable that represents a WorksheetFunction object.
| Name | Required/Optional | Data type | Description |
|---|---|---|---|
| Arg1 | Required | Double | Date-time code used by Microsoft Excel for date and time calculation. |
| Arg2 | Optional | Variant | This argument is not available in the function. |
Double
Returns the ordinal number of the ISO 8601 calendar week in the year for the given date. ISO 8601 defines the calendar week as a time interval of seven calendar days starting with a Monday, and the first calendar week of a year as the one that includes the first Thursday of that year.
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