---
title: nanosecondsSinceStart
framework: sensorkit
role: symbol
role_heading: Instance Property
path: sensorkit/srphotoplethysmogramaccelerometersample/nanosecondssincestart
---

# nanosecondsSinceStart

The time in nanoseconds since the start of the accelerometer data recording.

## Declaration

```swift
var nanosecondsSinceStart: Int64 { get }
```

## See Also

### Accessing accelerometer data

- [samplingFrequency](sensorkit/srphotoplethysmogramaccelerometersample/samplingfrequency.md)
- [x](sensorkit/srphotoplethysmogramaccelerometersample/x.md)
- [y](sensorkit/srphotoplethysmogramaccelerometersample/y.md)
- [z](sensorkit/srphotoplethysmogramaccelerometersample/z.md)