# init(fire:interval:repeats:block:) Initializes a timer for the specified date and time interval with the specified block. ``` convenience init(fire date: Date, interval: TimeInterval, repeats: Bool, block: @escaping @Sendable (Timer) -> Void) ``` ## Parameters `date` The time at which the timer should first fire. `interval` For a repeating timer, this parameter contains the number of seconds between firings of the timer. If `interval` is less than or equal to `0.0`, this method chooses the nonnegative value of `0.0001` seconds instead. `repeats` If , the timer will repeatedly reschedule itself until invalidated. If , the timer will be invalidated after it fires. `block` A block to be executed when the timer fires. The block takes a single [`Timer`](/documentation/Foundation/Timer) parameter and has no return value. ## Return Value A new [`Timer`](/documentation/Foundation/Timer) object, configured according to the specified parameters. ## Discussion You must add the new timer to a run loop, using [`add(_:forMode:)`](/documentation/Foundation/RunLoop/add(_:forMode:)-392ag). Upon firing, after `interval` seconds have elapsed, the timer fires, executing `block`. (If the timer is configured to repeat, you don’t need to add the timer to the run loop again.) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)