---
title: Date Formatter Property Keys
framework: corefoundation
role: collectionGroup
role_heading: API Collection
path: corefoundation/date-formatter-property-keys
---

# Date Formatter Property Keys

Keys used in key-value pairs to discover and specify the value of date formatter properties—used in conjunction with CFDateFormatterCopyProperty(_:_:) and CFDateFormatterSetProperty(_:_:_:).

## Overview

Overview The values for these keys are all CFType objects. The specific types for each key are specified above.

## Topics

### Constants

- [isLenient](corefoundation/cfdateformatterkey/islenient.md)
- [timeZone](corefoundation/cfdateformatterkey/timezone.md)
- [calendarName](corefoundation/cfdateformatterkey/calendarname.md)
- [defaultFormat](corefoundation/cfdateformatterkey/defaultformat.md)
- [twoDigitStartDate](corefoundation/cfdateformatterkey/twodigitstartdate.md)
- [defaultDate](corefoundation/cfdateformatterkey/defaultdate.md)
- [calendar](corefoundation/cfdateformatterkey/calendar.md)
- [eraSymbols](corefoundation/cfdateformatterkey/erasymbols.md)
- [monthSymbols](corefoundation/cfdateformatterkey/monthsymbols.md)
- [shortMonthSymbols](corefoundation/cfdateformatterkey/shortmonthsymbols.md)
- [weekdaySymbols](corefoundation/cfdateformatterkey/weekdaysymbols.md)
- [shortWeekdaySymbols](corefoundation/cfdateformatterkey/shortweekdaysymbols.md)
- [amSymbol](corefoundation/cfdateformatterkey/amsymbol.md)
- [pmSymbol](corefoundation/cfdateformatterkey/pmsymbol.md)
- [longEraSymbols](corefoundation/cfdateformatterkey/longerasymbols.md)
- [veryShortMonthSymbols](corefoundation/cfdateformatterkey/veryshortmonthsymbols.md)
- [standaloneMonthSymbols](corefoundation/cfdateformatterkey/standalonemonthsymbols.md)
- [shortStandaloneMonthSymbols](corefoundation/cfdateformatterkey/shortstandalonemonthsymbols.md)
- [veryShortStandaloneMonthSymbols](corefoundation/cfdateformatterkey/veryshortstandalonemonthsymbols.md)
- [veryShortWeekdaySymbols](corefoundation/cfdateformatterkey/veryshortweekdaysymbols.md)
- [standaloneWeekdaySymbols](corefoundation/cfdateformatterkey/standaloneweekdaysymbols.md)
- [shortStandaloneWeekdaySymbols](corefoundation/cfdateformatterkey/shortstandaloneweekdaysymbols.md)
- [veryShortStandaloneWeekdaySymbols](corefoundation/cfdateformatterkey/veryshortstandaloneweekdaysymbols.md)
- [quarterSymbols](corefoundation/cfdateformatterkey/quartersymbols.md)
- [shortQuarterSymbols](corefoundation/cfdateformatterkey/shortquartersymbols.md)
- [standaloneQuarterSymbols](corefoundation/cfdateformatterkey/standalonequartersymbols.md)
- [shortStandaloneQuarterSymbols](corefoundation/cfdateformatterkey/shortstandalonequartersymbols.md)
- [gregorianStartDate](corefoundation/cfdateformatterkey/gregorianstartdate.md)
- [doesRelativeDateFormattingKey](corefoundation/cfdateformatterkey/doesrelativedateformattingkey.md)

## See Also

### Constants

- [Date Formatter Styles](corefoundation/date_formatter_styles.md)
- [Calendar Names](corefoundation/calendar-names.md)