# TimeUpdate.WaitForLastPresentationAndUpdateTime

> Waits for the operating system (OS) to flip the back buffer to the display and update the time in the engine.

## Definition

* **Type:** Struct
* **Namespace:** [UnityEngine.PlayerLoop](/engine/6000.5/script-reference/unityengine/playerloop.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public struct TimeUpdate.WaitForLastPresentationAndUpdateTime
```