---
title: CNContactNonGregorianBirthdayKey
framework: contacts
role: symbol
role_heading: Global Variable
path: contacts/cncontactnongregorianbirthdaykey
---

# CNContactNonGregorianBirthdayKey

The non-Gregorian birthday of the contact.

## Declaration

```swift
let CNContactNonGregorianBirthdayKey: String
```

## Discussion

Discussion This key takes a string value.

## See Also

### Birthday

- [CNContactBirthdayKey](contacts/cncontactbirthdaykey.md)
- [CNContactDatesKey](contacts/cncontactdateskey.md)