[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Time](https://evolu.dev/docs/api-reference/common/Time) › DurationLiteralWeeks

```ts
const DurationLiteralWeeks: union(
  templateLiteral(Digit1To51, "w"),
  templateLiteral(Digit1To51, ".", Digit1To9, "w"),
);
```

Defined in: [packages/common/src/Time.ts:600](https://github.com/evoluhq/evolu/blob/dd96d79f1dbe9a49fa12ce8e0aa7d3d0177795ca/packages/common/src/Time.ts#L600)

Weeks duration: `"1w"` to `"51w"` or `"1.1w"` to `"51.9w"`. See
[DurationLiteral](https://evolu.dev/docs/api-reference/common/Time/variables/DurationLiteral).