# Date.IntervalFormatStyle.DateStyle The type that defines date interval styles that vary in length or in their included components. ``` typealias DateStyle = Date.FormatStyle.DateStyle ``` ## Discussion The exact format depends on the locale. Possible values of date interval style include: [`omitted`](/documentation/Foundation/Date/FormatStyle/DateStyle/omitted), [`numeric`](/documentation/Foundation/Date/FormatStyle/DateStyle/numeric), [`abbreviated`](/documentation/Foundation/Date/FormatStyle/DateStyle/abbreviated), [`long`](/documentation/Foundation/Date/FormatStyle/DateStyle/long), and [`complete`](/documentation/Foundation/Date/FormatStyle/DateStyle/complete). The following code sample shows a variety of date interval style format results using the `en_US` locale. ```swift if let today = Calendar.current.date(byAdding: .day, value: -120, to: Date()), let thirtyDaysBeforeToday = Calendar.current.date(byAdding: .day, value: -30, to: today) { // today: Apr 11, 2021 at 7:14 AM // thirtyDaysBeforeToday: Mar 12, 2021 at 7:14 AM // Create a Range. let last30days = thirtyDaysBeforeToday..