# getEra(_:yearForWeekOfYear:weekOfYear:weekday:from:) Returns by reference the era, year, week of year, and weekday component values for a given date. ``` func getEra(_ eraValuePointer: UnsafeMutablePointer?, yearForWeekOfYear yearValuePointer: UnsafeMutablePointer?, weekOfYear weekValuePointer: UnsafeMutablePointer?, weekday weekdayValuePointer: UnsafeMutablePointer?, from date: Date) ``` ## Parameters `eraValuePointer` Upon return, contains the era of the given date. `yearValuePointer` Upon return, contains the year of the given date. `weekValuePointer` Upon return, contains the week of the given date. `weekdayValuePointer` Upon return, contains the weekday of the given date. `date` The date for which to perform the calculation. ## Discussion Pass `NULL` to ignore any individual component parameter. This is a convenience method for getting the time components of a given date using [`components(_:from:)`](/documentation/Foundation/NSCalendar/components(_:from:)) --- 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)