# Date.week

## Function

Read the ISO week number of the current Date.

## Syntax

```bt
date_value.week()
```

## Parameters

No parameters.

## Return value

| Type | Description |
| ------ | ------ |
| Int | Returns the ISO week number from 1 to 53. |

## Code Example

```bt
result = date('2026-06-09 10:11:12').week()
```

## Notes

- ISO weeks start with Monday as the first day of the week.