# dateRange(referenceDate:) The calculated date range of a subscription period, starting at the reference date. ``` @backDeployed(before: iOS 16.0, macOS 13.0, tvOS 16.0, watchOS 9.0, macCatalyst 16.0) func dateRange(referenceDate: Date = .now) -> Range ``` ## Parameters `referenceDate` A date you provide that indicates the lower bound of the returned date range. The default value is . ## Return Value The subscription period represented by two dates that are the lower bound and upper bound of the subscription period of the [`Product.SubscriptionPeriod`](/documentation/StoreKit/Product/SubscriptionPeriod) instance. ## Discussion The date range calculates a single subscription period starting from the date you provide in `referenceDate`. For example, if the subscription period of the [`Product.SubscriptionPeriod`](/documentation/StoreKit/Product/SubscriptionPeriod) instance is one month, and the `referenceDate` is February 1, the date range contains February 1 and March 1. If the `referenceDate` is Feb 15, the date range contains February 15 and March 15. Use the [`dateRange(referenceDate:)`](/documentation/StoreKit/Product/SubscriptionPeriod/dateRange(referenceDate:)) with a to get a human-readable string representation of the subscription period. Get the format style () corresponding to product’s storefront using the [`subscriptionPeriodFormatStyle`](/documentation/StoreKit/Product/subscriptionPeriodFormatStyle). --- 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)