---
title: "init(start:end:)"
framework: foundation
role: symbol
role_heading: Initializer
path: "foundation/nsdateinterval/init(start:end:)"
---

# init(start:end:)

Initializes a date interval from a given start date and end date.

## Declaration

```swift
convenience init(start startDate: Date, end endDate: Date)
```

## Parameters

- `startDate`: The start date of the date interval.
- `endDate`: The end date of the date interval. important: This method raises an NSArgumentException if doc://com.apple.foundation/documentation/Foundation/NSDateInterval/endDate occurs earlier than doc://com.apple.foundation/documentation/Foundation/NSDateInterval/startDate.

## See Also

### Creating Date Intervals

- [init()](foundation/nsdateinterval/init().md)
- [init(start:duration:)](foundation/nsdateinterval/init(start:duration:).md)
- [init(coder:)](foundation/nsdateinterval/init(coder:).md)