---
title: nonGregorianBirthday
framework: contacts
role: symbol
role_heading: Instance Property
path: contacts/cnmutablecontact/nongregorianbirthday
---

# nonGregorianBirthday

A date component for the non-Gregorian birthday of the contact.

## Declaration

```swift
var nonGregorianBirthday: DateComponents? { get set }
```

## Discussion

Discussion A non-Gregorian birthday such as Lunisolar birthdays can be displayed using this property, whose values are the relevant properties of an NSDateComponents object. Day and month are required; year and isLeapMonth are optional. The calendar property is also required and must be non-Gregorian. Some supported calendars are Buddhist, Chinese, or Islamic. All other date components are invalid.

## See Also

### Setting Birthday Information

- [dates](contacts/cnmutablecontact/dates.md)
- [birthday](contacts/cnmutablecontact/birthday.md)