how to convert timestamp to date string ios swift code example

Example 1: swift string time to epoch

let date = NSDate() // current date
let unixtime = date.timeIntervalSince1970

Example 2: convert secondsfrom1970 to date swift

var epocTime = NSTimeInterval(1429162809359)

let myDate = NSDate(timeIntervalSince1970: epocTime)
println("Converted Time \(myDate)")