[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) › millisToDateIso

```ts
function millisToDateIso(
  value: number &
    Brand<"NonNaN"> &
    Brand<"Finite"> &
    Brand<"Int"> &
    Brand<"NonNegative"> &
    Brand<"LessThan281474976710655"> &
    Brand<"Millis">,
): string & Brand<"DateIso">;
```

Defined in: [packages/common/src/Time.ts:358](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Time.ts#L358)

Converts [Millis](https://evolu.dev/docs/api-reference/common/Time/variables/Millis) to [DateIso](https://evolu.dev/docs/api-reference/common/Type/variables/DateIso).

This is a safe cast because [Millis](https://evolu.dev/docs/api-reference/common/Time/variables/Millis) guarantees a valid timestamp range
that always produces a valid ISO string.