# durationOffset(to:) A time data source that produces the offset between `Date.now` and the given `date` as a `Duration`. ``` static func durationOffset(to date: Date) -> TimeDataSource ``` --- 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)