---
title: "init(identifier:)"
framework: foundation
role: symbol
role_heading: Initializer
path: "foundation/timezone/init(identifier:)"
---

# init(identifier:)

Returns a time zone initialized with a given identifier.

## Declaration

```swift
init?(identifier: String)
```

## Discussion

Discussion An example identifier is “America/Los_Angeles”. If identifier is an unknown identifier, then returns nil.