---
title: timeZone
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/date/iso8601formatstyle/timezone
---

# timeZone

The time zone used to create and parse date representations.

## Declaration

```swift
var timeZone: TimeZone { get set }
```

## Discussion

Discussion The default time zone is Greenwich Mean Time (GMT).

## See Also

### Modifying an ISO 8601 Format Style

- [dateSeparator](foundation/date/iso8601formatstyle/dateseparator-swift.property.md)
- [dateTimeSeparator](foundation/date/iso8601formatstyle/datetimeseparator-swift.property.md)
- [dateTimeSeparator(_:)](foundation/date/iso8601formatstyle/datetimeseparator(_:).md)