---
title: CFTimeZoneCopyAbbreviationDictionary()
framework: corefoundation
role: symbol
role_heading: Function
path: corefoundation/cftimezonecopyabbreviationdictionary()
---

# CFTimeZoneCopyAbbreviationDictionary()

Returns a dictionary holding the mappings of time zone abbreviations to time zone names.

## Declaration

```swift
func CFTimeZoneCopyAbbreviationDictionary() -> CFDictionary!
```

## Return Value

Return Value A dictionary containing the mappings of time zone abbreviations to time zone names. Ownership follows the The Create Rule.

## Discussion

Discussion More than one time zone may have the same abbreviation. For example, US/Pacific and Canada/Pacific both use the abbreviation “PST.” In these cases this function chooses a single name to map the abbreviation to.

## See Also

### System and Default Time Zones and Information

- [CFTimeZoneCopyAbbreviation(_:_:)](corefoundation/cftimezonecopyabbreviation(_:_:).md)
- [CFTimeZoneCopyDefault()](corefoundation/cftimezonecopydefault().md)
- [CFTimeZoneCopySystem()](corefoundation/cftimezonecopysystem().md)
- [CFTimeZoneSetDefault(_:)](corefoundation/cftimezonesetdefault(_:).md)
- [CFTimeZoneCopyKnownNames()](corefoundation/cftimezonecopyknownnames().md)
- [CFTimeZoneResetSystem()](corefoundation/cftimezoneresetsystem().md)
- [CFTimeZoneSetAbbreviationDictionary(_:)](corefoundation/cftimezonesetabbreviationdictionary(_:).md)