# second() Modifies the date interval format style to include the seconds. ``` func second() -> Date.IntervalFormatStyle ``` ## Return Value A date interval format style that includes the seconds. ## Discussion This example shows a combination of date interval format styles that include the hour, minutes, and seconds: ```swift if let today = Calendar.current.date(byAdding: .day, value: -140, to: Date()), let sevenDaysBeforeToday = Calendar.current.date(byAdding: .day, value: -7, to: today) { // Create a Range. let weekBefore = sevenDaysBeforeToday..