<!--
{
  "availability" : [
    "iOS: 2.0.0 -",
    "iPadOS: 2.0.0 -",
    "macCatalyst: 13.0.0 -",
    "macOS: 10.0.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 2.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Foundation",
  "identifier" : "/documentation/Foundation/Thread/sleep(until:)",
  "metadataVersion" : "0.1.0",
  "role" : "Type Method",
  "symbol" : {
    "kind" : "Type Method",
    "modules" : [
      "Foundation"
    ],
    "preciseIdentifier" : "c:objc(cs)NSThread(cm)sleepUntilDate:"
  },
  "title" : "sleep(until:)"
}
-->

# sleep(until:)

Blocks the current thread until the time specified.

```
class func sleep(until date: Date)
```

## Parameters

`date`

The time at which to resume processing.

## Discussion

No run loop processing occurs while the thread is blocked.

## See Also

[`current`](/documentation/Foundation/Thread/current)

Returns the thread object representing the current thread of execution.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)