---
title: timeCodesPerSecond
framework: usdkit
role: symbol
role_heading: Instance Property
path: usdkit/usdlayer/timecodespersecond
---

# timeCodesPerSecond

The rate at which time codes advance per second. nil if not authored.

## Declaration

```swift
var timeCodesPerSecond: Double? { get nonmutating set }
```

## See Also

### Setting the time range

- [startTimeCode](usdkit/usdlayer/starttimecode.md)
- [endTimeCode](usdkit/usdlayer/endtimecode.md)
- [USDLayer.TimeCode](usdkit/usdlayer/timecode.md)
- [USDLayer.TimeOffset](usdkit/usdlayer/timeoffset.md)