[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) › DurationLiteralHours

```ts
const DurationLiteralHours: union(
  templateLiteral(Digit1To23, "h"),
  templateLiteral(Digit1To23, ".", Digit1To9, "h"),
);
```

Defined in: [packages/common/src/Time.ts:562](https://github.com/evoluhq/evolu/blob/dd96d79f1dbe9a49fa12ce8e0aa7d3d0177795ca/packages/common/src/Time.ts#L562)

Hours duration: `"1h"` to `"23h"` or `"1.1h"` to `"23.9h"`. See
[DurationLiteral](https://evolu.dev/docs/api-reference/common/Time/variables/DurationLiteral).