[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:474](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Time.ts#L474)

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