The following tables are for a developer’s reference, to show the Date Format in Swift 4.   Using dateStyle and timeStyle properties let formatter = DateFormatter() formatter.dateStyle = .full formatter.timeStyle = .full let dateString = formatter.string(from: Date()) Tuesday, October 30, 2018 at 9:48:38 PM Pacific Daylight Time     Using format strings let formatter = DateFormatter() formatter.dateFormat = "y, M, d, E, h:m:s, a" let dateString = formatter.string(from: Date()) 2018, 10, 30, Tue, 9:54:37, PM