---
title: lastDisplayUpdateTimestamp
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nsscreen/lastdisplayupdatetimestamp
---

# lastDisplayUpdateTimestamp

The time of the last framebuffer update, expressed as the number of seconds since system startup.

## Declaration

```swift
var lastDisplayUpdateTimestamp: TimeInterval { get }
```

## Discussion

Discussion Use this property to determine how much time elapsed since the last frame update.

## See Also

### Getting Variable Refresh Rate Details

- [maximumFramesPerSecond](appkit/nsscreen/maximumframespersecond.md)
- [minimumRefreshInterval](appkit/nsscreen/minimumrefreshinterval.md)
- [maximumRefreshInterval](appkit/nsscreen/maximumrefreshinterval.md)
- [displayUpdateGranularity](appkit/nsscreen/displayupdategranularity.md)