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# modificationDate

The date when you saved the game data or modified it.

```
var modificationDate: Date? { get }
```

## Discussion

Game Center sets this property when you save game data using the [`saveGameData(_:withName:completionHandler:)`](/documentation/GameKit/GKLocalPlayer/saveGameData(_:withName:completionHandler:)) method. If you save game data using an existing filename, Game Center overwrites the file with the new data and changes the modification date.

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