---
title: "getTimelineStartDate(for:withHandler:)"
framework: clockkit
role: symbol
role_heading: Instance Method
path: "clockkit/clkcomplicationdatasource/gettimelinestartdate(for:withhandler:)"
---

# getTimelineStartDate(for:withHandler:)

Retrieves the earliest date for which your complication is prepared to supply data.

## Declaration

```swift
optional func getTimelineStartDate(for complication: CLKComplication, withHandler handler: @escaping (Date?) -> Void)
```

## Parameters

- `complication`: The complication tied to the request.
- `handler`: The handler to execute with the start date. This block has no return value and takes the following parameter:

## Discussion

Discussion Only implement this method if your app supports Time Travel on watchOS 4 or earlier. Your implementation of this method must execute the block in the handler parameter and specify the earliest date for which you can supply timeline entries. If you don’t support displaying past data using Time Travel, specify the current date. If you don’t implement this method, ClockKit doesn’t attempt to retrieve timeline entries before the current entry.

## See Also

### Deprecated methods

- [CLKLaunchedTimelineEntryDateKey](clockkit/clklaunchedtimelineentrydatekey.md)
- [CLKLaunchedComplicationIdentifierKey](clockkit/clklaunchedcomplicationidentifierkey.md)
- [getComplicationDescriptors(handler:)](clockkit/clkcomplicationdatasource/getcomplicationdescriptors(handler:).md)
- [handleSharedComplicationDescriptors(_:)](clockkit/clkcomplicationdatasource/handlesharedcomplicationdescriptors(_:).md)
- [getLocalizableSampleTemplate(for:withHandler:)](clockkit/clkcomplicationdatasource/getlocalizablesampletemplate(for:withhandler:).md)
- [getPrivacyBehavior(for:withHandler:)](clockkit/clkcomplicationdatasource/getprivacybehavior(for:withhandler:).md)
- [CLKComplicationPrivacyBehavior](clockkit/clkcomplicationprivacybehavior.md)
- [getAlwaysOnTemplate(for:withHandler:)](clockkit/clkcomplicationdatasource/getalwaysontemplate(for:withhandler:).md)
- [getTimelineEndDate(for:withHandler:)](clockkit/clkcomplicationdatasource/gettimelineenddate(for:withhandler:).md)
- [getCurrentTimelineEntry(for:withHandler:)](clockkit/clkcomplicationdatasource/getcurrenttimelineentry(for:withhandler:).md)
- [getTimelineEntries(for:after:limit:withHandler:)](clockkit/clkcomplicationdatasource/gettimelineentries(for:after:limit:withhandler:).md)
- [getTimelineAnimationBehavior(for:withHandler:)](clockkit/clkcomplicationdatasource/gettimelineanimationbehavior(for:withhandler:).md)
- [CLKComplicationTimelineAnimationBehavior](clockkit/clkcomplicationtimelineanimationbehavior.md)
- [getSupportedTimeTravelDirections(for:withHandler:)](clockkit/clkcomplicationdatasource/getsupportedtimetraveldirections(for:withhandler:).md)
- [CLKComplicationTimeTravelDirections](clockkit/clkcomplicationtimetraveldirections.md)