---
title: kIOTimerClockRealTime
framework: driverkit
role: symbol
role_heading: Enumeration Case
path: driverkit/kiotimerclockrealtime
---

# kIOTimerClockRealTime

The system’s real time, expressed as the amount of time since the Epoch.

## Declaration

```occ
kIOTimerClockRealTime
```

## Discussion

Discussion This constant is the type of clock obtained by passing CLOCK_REALTIME to clock_gettime_nsec_np(_:). It’s equivalent to a value from gettimeofday(_:_:), but in nanoseconds.

## See Also

### Timer Options

- [kIOTimerClockUptimeRaw](driverkit/kiotimerclockuptimeraw.md)
- [kIOTimerClockMonotonicRaw](driverkit/kiotimerclockmonotonicraw.md)
- [kIOTimerClockWallTime](driverkit/kiotimerclockwalltime.md)
- [kIOTimerClockMachAbsoluteTime](driverkit/kiotimerclockmachabsolutetime.md)
- [kIOTimerClockMachContinuousTime](driverkit/kiotimerclockmachcontinuoustime.md)