---
title: MIDITimeStamp
framework: coremidi
role: symbol
role_heading: Type Alias
path: coremidi/miditimestamp
---

# MIDITimeStamp

The time on the host clock when the event occurred.

## Declaration

```swift
typealias MIDITimeStamp = UInt64
```

## Discussion

Discussion The system determines the timestamp using mach_absolute_time().

## See Also

### Packet list management

- [MIDIPacketNext(_:)](coremidi/midipacketnext(_:).md)
- [MIDIPacket](coremidi/midipacket.md)
- [MIDIPacketList](coremidi/midipacketlist.md)
- [UnsafeMutableMIDIPacketListPointer](coremidi/unsafemutablemidipacketlistpointer.md)
- [UnsafeMutableMIDIPacketPointer](coremidi/unsafemutablemidipacketpointer.md)