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# AlarmPresentationState.Mode.Countdown

An object that specifies a countdown is in progress.

```
struct Countdown
```

## Topics

### Creating a countdown

[`init(totalCountdownDuration: TimeInterval, previouslyElapsedDuration: TimeInterval, startDate: Date, fireDate: Date)`](/documentation/AlarmKit/AlarmPresentationState/Mode-swift.enum/Countdown/init(totalCountdownDuration:previouslyElapsedDuration:startDate:fireDate:))

Creates an instance of a countdown.

[`var fireDate: Date`](/documentation/AlarmKit/AlarmPresentationState/Mode-swift.enum/Countdown/fireDate)

The date the countdown starts.

[`var previouslyElapsedDuration: TimeInterval`](/documentation/AlarmKit/AlarmPresentationState/Mode-swift.enum/Countdown/previouslyElapsedDuration)

The amount of time that elapsed before the most recent
resumption of the countdown.

[`var startDate: Date`](/documentation/AlarmKit/AlarmPresentationState/Mode-swift.enum/Countdown/startDate)

The date at which the countdown was mostly recently resumed.

[`var totalCountdownDuration: TimeInterval`](/documentation/AlarmKit/AlarmPresentationState/Mode-swift.enum/Countdown/totalCountdownDuration)

The total duration of the countdown.

### Decoding

## Relationships

### Conforms To

[`Encodable`](/documentation/Swift/Encodable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Decodable`](/documentation/Swift/Decodable)

[`Hashable`](/documentation/Swift/Hashable)

[`Sendable`](/documentation/Swift/Sendable)

[`Equatable`](/documentation/Swift/Equatable)

---

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