---
title: weekOfYear
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/nscalendar/unit/weekofyear
---

# weekOfYear

Identifier for the week of the year calendar unit.

## Declaration

```swift
static var weekOfYear: NSCalendar.Unit { get }
```

## See Also

### Specifying Weeks and Days

- [weekOfMonth](foundation/nscalendar/unit/weekofmonth.md)
- [weekday](foundation/nscalendar/unit/weekday.md)
- [weekdayOrdinal](foundation/nscalendar/unit/weekdayordinal.md)
- [day](foundation/nscalendar/unit/day.md)
- [dayOfYear](foundation/nscalendar/unit/dayofyear.md)
- [isRepeatedDay](foundation/nscalendar/unit/isrepeatedday.md)