Swift convert unix time to date and time

Question

My current code   if  let var timeResult    jsonResult  dt   as  Double        timeResult   NSDate   timeIntervalSince1970     println timeResult      println NSDate        The results   println timeResult    1415639000 67457  println NSDate      2014-11-10 17 03 20  0000 was just to test to see what NSDate was providing    I want the first to look like the last  The value for dt   1415637900   Also  how can I adjust to time zone  Running on iOS

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Swift   extension Double       func getDateStringFromUnixTime dateStyle  DateFormatter Style  timeStyle  DateFormatter Style  - gt  String           let dateFormatter   DateFormatter           dateFormatter dateStyle   dateStyle         dateFormatter timeStyle   timeStyle         return dateFormatter string from  Date timeIntervalSince1970  self

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Here is a working Swift 3 solution from one of my apps              Convert unix time to human readable time  Return empty string if unixtime         argument is 0  Note that EMPTY STRING             param unixdate the time in unix format  e g  1482505225     param timezone the user s time zone  e g  EST  PST     return the date and time converted into human readable String format          private func getDate unixdate  Int  timezone  String  - gt  String       if unixdate    0  return EMPTY STRING      let date   NSDate timeIntervalSince1970  TimeInterval unixdate       let dayTimePeriodFormatter   DateFormatter       dayTimePeriodFormatter dateFormat    MMM dd YYYY hh mm a      dayTimePeriodFormatter timeZone   NSTimeZone name  timezone  as TimeZone      let dateString   dayTimePeriodFormatter string from  date as Date      return  Updated    dateString

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In Swift 5  Using this implementation you just have to give epoch time as a parameter and you will the output as  1 second ago  2 minutes ago  and so on     func setTimestamp epochTime  String  - gt  String       let currentDate   Date       let epochDate   Date timeIntervalSince1970  TimeInterval epochTime  as  TimeInterval       let calendar   Calendar current      let currentDay   calendar component  day  from  currentDate      let currentHour   calendar component  hour  from  currentDate      let currentMinutes   calendar component  minute  from  currentDate      let currentSeconds   calendar component  second  from  currentDate       let epochDay   calendar component  day  from  epochDate      let epochMonth   calendar component  month  from  epochDate      let epochYear   calendar component  year  from  epochDate      let epochHour   calendar component  hour  from  epochDate      let epochMinutes   calendar component  minute  from  epochDate      let epochSeconds   calendar component  second  from  epochDate       if  currentDay - epochDay  lt  30            if  currentDay    epochDay                if  currentHour - epochHour    0                    if  currentMinutes - epochMinutes    0                        if  currentSeconds - epochSeconds  lt   1                            return String currentSeconds - epochSeconds      second ago                        else                           return String currentSeconds - epochSeconds      seconds ago                                           else if  currentMinutes - epochMinutes  lt   1                        return String currentMinutes - epochMinutes      minute ago                    else                       return String currentMinutes - epochMinutes      minutes ago                                  else if  currentHour - epochHour  lt   1                    return String currentHour - epochHour      hour ago                else                   return String currentHour - epochHour      hours ago                          else if  currentDay - epochDay  lt   1                return String currentDay - epochDay      day ago            else               return String currentDay - epochDay      days ago                  else           return String epochDay          getMonthNameFromInt month  epochMonth          String epochYear            func getMonthNameFromInt month  Int  - gt  String       switch month       case 1          return  Jan      case 2          return  Feb      case 3          return  Mar      case 4          return  Apr      case 5          return  May      case 6          return  Jun      case 7          return  Jul      case 8          return  Aug      case 9          return  Sept      case 10          return  Oct      case 11          return  Nov      case 12          return  Dec      default          return              How to call   setTimestamp epochTime  time  and you ll get the desired output as a string

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To get the date to show as the current time zone I used the following   if let timeResult    jsonResult  dt   as  Double         let date   NSDate timeIntervalSince1970  timeResult       let dateFormatter   NSDateFormatter        dateFormatter timeStyle   NSDateFormatterStyle MediumStyle   Set time style      dateFormatter dateStyle   NSDateFormatterStyle MediumStyle   Set date style      dateFormatter timeZone   NSTimeZone        let localDate   dateFormatter stringFromDate date      Swift 3 0 Version  if let timeResult    jsonResult  dt   as  Double        let date   Date timeIntervalSince1970  timeResult      let dateFormatter   DateFormatter       dateFormatter timeStyle   DateFormatter Style medium   Set time style     dateFormatter dateStyle   DateFormatter Style medium   Set date style     dateFormatter timeZone   self timeZone     let localDate   dateFormatter string from  date                           Swift 5  if let timeResult    jsonResult  dt   as  Double        let date   Date timeIntervalSince1970  timeResult      let dateFormatter   DateFormatter       dateFormatter timeStyle   DateFormatter Style medium   Set time style     dateFormatter dateStyle   DateFormatter Style medium   Set date style     dateFormatter timeZone    current     let localDate   dateFormatter string from  date

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Anyway  Nate Cook s answer is accepted but I would like to improve it with better date format  with Swift 2 2  I can get desired formatted date   TimeStamp let timeInterval    1415639000 67457 print  quot time interval is   timeInterval  quot      Convert to Date let date   NSDate timeIntervalSince1970  timeInterval     Date formatting let dateFormatter   NSDateFormatter   dateFormatter dateFormat    quot dd  MMMM yyyy HH mm a quot  dateFormatter timeZone   NSTimeZone name   quot UTC quot   let dateString   dateFormatter stringFromDate date  print  quot formatted date is      dateString  quot     the result is  time interval is 1415639000 67457 formatted date is    10  November 2014 17 03 PM

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func timeStringFromUnixTime unixTime  Double  - gt  String       let date   NSDate timeIntervalSince1970  unixTime          Returns date formatted as 12 hour time      dateFormatter dateFormat    hh mm a      return dateFormatter stringFromDate date     func dayStringFromTime unixTime  Double  - gt  String       let date   NSDate timeIntervalSince1970  unixTime      dateFormatter locale   NSLocale localeIdentifier  NSLocale currentLocale   localeIdentifier      dateFormatter dateFormat    EEEE      return dateFormatter stringFromDate date

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For me  Converting timestamps coming from API to a valid date     let date   NSDate init fromUnixTimestampNumber  timesTamp    i e 1547398524000     as Date

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It s simple to convert the Unix timestamp into the desired format  Lets suppose  ts is the Unix timestamp in long  let date   NSDate timeIntervalSince1970   ts   let dayTimePeriodFormatter   NSDateFormatter   dayTimePeriodFormatter dateFormat    MMM dd YYYY hh mm a    let dateString   dayTimePeriodFormatter stringFromDate date     print     ts value is    ts      print     ts value is   dateString

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You can get a date with that value by using the NSDate withTimeIntervalSince1970   initializer   let date   NSDate timeIntervalSince1970  1415637900

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For managing dates in Swift 3 I ended up with this helper function   extension Double       func getDateStringFromUTC   - gt  String           let date   Date timeIntervalSince1970  self           let dateFormatter   DateFormatter           dateFormatter locale   Locale identifier   en US           dateFormatter dateStyle    medium          return dateFormatter string from  date            This way it easy to use whenever you need it - in my case it was converting a string     1481721300  as  Double  getDateStringFromUTC       Dec 14  2016    Reference the DateFormatter docs for more details on formatting  Note that some of the examples are out of date   I found this article to be very helpful as well

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Convert timestamp into Date object    If timestamp object is invalid then return current date   class func toDate   timestamp  Any   - gt  Date        if let any   timestamp           if let str   any as  NSString               return Date timeIntervalSince1970  str doubleValue            else if let str   any as  NSNumber               return Date timeIntervalSince1970  str doubleValue                      return nil

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