Category: Date and Time function
This function returns a time period formatted as year-ISO week number ("yyyy-W##"), or an error if the argument is not a number date.
| Argument | Type | Description |
|---|---|---|
| date | Date or Number (date serial) | A expression representing a date. See "Remarks" below for details. |
Return value type: String
The date argument can take any value or expression that evaluates to a date serial value, with or without a time portion. Examples include:
yearweek(#2025-02-25) //Returns "2025-W09"
yearweek(44426) //Returns "2021-W33" (44426 equivalent to August 18th, 2021)