# CustomEpoch

> The epoch, in Unix milliseconds, that timestamps are measured from.

## Definition

* **Type:** Property
* **Namespace:** [Unity.Localization](/engine/7000.0/script-reference/unity/localization.md)
* **Assembly:** UnityEngine.LocalizationRuntimeModule

```csharp
public long CustomEpoch { get; }
```

### Remarks

Defaults to 2020-01-01T00:00:00Z, which every generator built by the default constructor shares. The 41-bit timestamp covers 69 years from the epoch. A generator restored from a saved [SharedTableData](/engine/7000.0/script-reference/unity/localization/sharedtabledata.md) always measures from the default epoch, so an epoch passed to the constructor lasts only for the life of that instance.