---
title: kABPersonAlternateBirthdayEraKey
framework: addressbook
role: symbol
role_heading: Global Variable
path: addressbook/kabpersonalternatebirthdayerakey
---

# kABPersonAlternateBirthdayEraKey

The associated value is a CFNumber of type CFNumberType.nsIntegerType whose value is the era for the birthday.

## Declaration

```swift
let kABPersonAlternateBirthdayEraKey: CFString!
```

## Discussion

Discussion Corresponds to era.

## See Also

### Deprecated

- [kABPersonAddressCityKey](addressbook/kabpersonaddresscitykey.md)
- [kABPersonAddressCountryCodeKey](addressbook/kabpersonaddresscountrycodekey.md)
- [kABPersonAddressCountryKey](addressbook/kabpersonaddresscountrykey.md)
- [kABPersonAddressProperty](addressbook/kabpersonaddressproperty.md)
- [kABPersonAddressStateKey](addressbook/kabpersonaddressstatekey.md)
- [kABPersonAddressStreetKey](addressbook/kabpersonaddressstreetkey.md)
- [kABPersonAddressZIPKey](addressbook/kabpersonaddresszipkey.md)
- [kABPersonAlternateBirthdayCalendarIdentifierKey](addressbook/kabpersonalternatebirthdaycalendaridentifierkey.md)
- [kABPersonAlternateBirthdayDayKey](addressbook/kabpersonalternatebirthdaydaykey.md)
- [kABPersonAlternateBirthdayIsLeapMonthKey](addressbook/kabpersonalternatebirthdayisleapmonthkey.md)
- [kABPersonAlternateBirthdayMonthKey](addressbook/kabpersonalternatebirthdaymonthkey.md)
- [kABPersonAlternateBirthdayProperty](addressbook/kabpersonalternatebirthdayproperty.md)
- [kABPersonAlternateBirthdayYearKey](addressbook/kabpersonalternatebirthdayyearkey.md)
- [kABPersonAnniversaryLabel](addressbook/kabpersonanniversarylabel.md)
- [kABPersonAssistantLabel](addressbook/kabpersonassistantlabel.md)