---
title: deltaTime
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/sceneevents/update/deltatime
---

# deltaTime

The elapsed time since the last update.

## Declaration

```swift
let deltaTime: TimeInterval
```

## See Also

### Characterizing an update

- [scene](realitykit/sceneevents/update/scene.md)