Date Format in Swift

Question

How will I convert this datetime from the date      From this  2016-02-29 12 24 26    to  Feb 29  2016   So far  this is my code and it returns a nil value   let dateFormatter   NSDateFormatter   dateFormatter dateFormat    MM-dd-yyyy  dateFormatter timeZone   NSTimeZone name   UTC   let date  NSDate    dateFormatter dateFromString  2016-02-29 12 24 26   print date

User · Answer

import UIKit        Example iso date time     let isoDateArray              2020-03-18T07 32 39 88Z            2020-03-18T07 32 39Z            2020-03-18T07 32 39 8Z            2020-03-18T07 32 39 88Z            2020-03-18T07 32 39 8834Z              let dateFormatterGetWithMs   DateFormatter       let dateFormatterGetNoMs   DateFormatter       Formater with and without millisecond      dateFormatterGetWithMs dateFormat    yyyy-MM-dd T HH mm ss SSS Z       dateFormatterGetNoMs dateFormat    yyyy-MM-dd T HH mm ss Z        let dateFormatterPrint   DateFormatter       dateFormatterPrint dateFormat    MMM dd yyyy       for dateString in isoDateArray           var date  Date    dateFormatterGetWithMs date from  dateString          if  date    nil               date   dateFormatterGetNoMs date from  dateString                    print              gt   date

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This may be useful for who want to use dateformater dateformat  if you want 12 09 18 you use dateformater dateformat    quot dd MM yy quot  Wednesday  Sep 12  2018           -- gt  EEEE  MMM d  yyyy 09 12 2018                        -- gt  MM dd yyyy 09-12-2018 14 11                  -- gt  MM-dd-yyyy HH mm Sep 12  2 11 PM                   -- gt  MMM d  h mm a September 2018                    -- gt  MMMM yyyy Sep 12  2018                      -- gt  MMM d  yyyy Wed  12 Sep 2018 14 11 54  0000   -- gt  E  d MMM yyyy HH mm ss Z 2018-09-12T14 11 54 0000          -- gt  yyyy-MM-dd T HH mm ssZ 12 09 18                          -- gt  dd MM yy 10 41 02 112                      -- gt  HH mm ss SSS

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Convert  BatyrCan answer to Swift 5 3 with extra formats  Tested in Xcode 12  let dateFormatter   DateFormatter   dateFormatter dateFormat    quot HH mm ss quot  var dateFromStr   dateFormatter date from   quot 12 16 45 quot     dateFormatter dateFormat    quot hh mm ss a  on  MMMM dd  yyyy quot    Output  12 16 45 PM on January 01  2000  dateFormatter dateFormat    quot E  d MMM yyyy HH mm ss Z quot    Output  Sat  1 Jan 2000 12 16 45  0600  dateFormatter dateFormat    quot yyyy-MM-dd T HH mm ssZ quot    Output  2000-01-01T12 16 45 0600  dateFormatter dateFormat    quot EEEE  MMM d  yyyy quot    Output  Saturday  Jan 1  2000  dateFormatter dateFormat    quot MM-dd-yyyy HH mm quot    Output  01-01-2000 12 16  dateFormatter dateFormat    quot MMM d  h mm a quot    Output  Jan 1  12 16 PM  dateFormatter dateFormat    quot HH mm ss SSS quot    Output  12 16 45 000  dateFormatter dateFormat    quot MMM d  yyyy quot    Output  Jan 1  2000  dateFormatter dateFormat    quot MM dd yyyy quot    Output  01 01 2000  dateFormatter dateFormat    quot hh mm ss a quot    Output  12 16 45 PM  dateFormatter dateFormat    quot MMMM yyyy quot    Output  January 2000  dateFormatter dateFormat    quot dd MM yy quot    Output  01 01 00    Customisable AP PM symbols dateFormatter amSymbol    quot am quot  dateFormatter pmSymbol    quot Pm quot  dateFormatter dateFormat    quot a quot    Output  Pm     Usage var timeFromDate   dateFormatter string from  dateFromStr  print timeFromDate

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swift 3  func dataFormat dataJ  Double  - gt  String            let dateFormatter   DateFormatter           dateFormatter dateStyle    long         dateFormatter timeStyle    none         let date   Date timeIntervalSince1970  dataJ          return  dataJ    nil     Today    dateFormatter string from  date       Date Invalid

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just use below function to convert date format -    let convertedFormat    convertToString dateString   2019-02-12 11 23 12   formatIn   yyyy-MM-dd hh mm ss   formatOut   MMM dd  yyyy        calling function     print convertedFormat     feb 12 2019    func convertToString  dateString  String  formatIn   String  formatOut   String  - gt  String        let dateFormater   DateFormatter       dateFormater timeZone   NSTimeZone abbreviation   UTC   as TimeZone      dateFormater dateFormat   formatIn     let date   dateFormater date from  dateString       dateFormater timeZone   NSTimeZone system      dateFormater dateFormat   formatOut     let timeStr   dateFormater string from  date       return timeStr

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Swift 3 with a Date extension  extension Date       func string with format  String  - gt  String           let dateFormatter   DateFormatter           dateFormatter dateFormat   format         return dateFormatter string from  self            Then you can use it like so   let date   Date   date string with   MMM dd  yyyy

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To convert 2016-02-29 12 24 26 into a date  use this date formatter   let dateFormatter   NSDateFormatter   dateFormatter dateFormat    yyyy-MM-dd hh mm ss    Edit  To get the output Feb 29  2016 use this date formatter   let dateFormatter   NSDateFormatter   dateFormatter dateFormat    MMM dd  yyyy

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For Swift 4 2  5  Pass date and format as whatever way you want   To choose format you can visit  NSDATEFORMATTER website    static func dateFormatter date  Date dateFormat String  - gt  String       let dateFormatter   DateFormatter       dateFormatter dateFormat   dateFormat     return dateFormatter string from  date

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Another interessant possibility of format date  This screenshot belongs to Apple s App  News      Here is the code   let dateFormat1   DateFormatter   dateFormat1 dateFormat    EEEE  let stringDay   dateFormat1 string from  Date     let dateFormat2   DateFormatter   dateFormat2 dateFormat    MMMM  let stringMonth   dateFormat2 string from  Date     let dateFormat3   DateFormatter   dateFormat3 dateFormat    dd  let numDay   dateFormat3 string from  Date     let stringDate   String format      n        stringDay uppercased    stringMonth uppercased    numDay    Nothing to add to alternative proposed by lorenzoliveto  It s just perfect   let dateFormat   DateFormatter   dateFormat dateFormat    EEEE nMMMM dd  let stringDate   dateFormat string from  Date    uppercased

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Swift 3 version with the new Date object instead NSDate   let dateFormatterGet   DateFormatter   dateFormatterGet dateFormat    yyyy-MM-dd HH mm ss   let dateFormatter   DateFormatter   dateFormatter dateFormat    MMM dd yyyy   let date  Date    dateFormatterGet date from   2017-02-14 17 24 26   print dateFormatter string from  date      EDIT  after mitul-nakum suggestion

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Swift 4  4 2 and 5  func getFormattedDate date  Date  format  String  - gt  String           let dateformat   DateFormatter           dateformat dateFormat   format         return dateformat string from  date     let formatingDate   getFormattedDate date  Date    format   dd-MMM-yyyy           print formatingDate

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Place it in extension and call it like below  It s easy to use throughout the application  self getFormattedDate strDate   quot 20-March-2019 quot   currentFomat   quot dd-MMM-yyyy quot   expectedFromat   quot yyyy-MM-dd quot    Implementation func getFormattedDate strDate  String   currentFomat String  expectedFromat  String  - gt  String      let dateFormatterGet   DateFormatter       dateFormatterGet dateFormat   currentFomat      let date   Date   dateFormatterGet date from  strDate     Date        dateFormatterGet dateFormat   expectedFromat     return dateFormatterGet string from  date

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I recommend to add timezone by default  I will show an example for swift 5 1  new an extension file Date Formatter swift  import Foundation  extension Date       func getFormattedDateString format  String  - gt  String           let dateFormatter   DateFormatter           dateFormatter dateFormat   format         dateFormatter timeZone   TimeZone current         return dateFormatter string from  self             Usage example       let date   Date       let dateString   date getFormattedDateString format   yyyy-MM-dd HH mm ss       print  dateString  gt    dateString           print        dateString  gt  2020-04-30 15 15 21

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Swift - 5 0  let date   Date   let formate   date getFormattedDate format   yyyy-MM-dd HH mm ss      Set output formate  extension Date      func getFormattedDate format  String  - gt  String           let dateformat   DateFormatter           dateformat dateFormat   format         return dateformat string from  self            Swift - 4 0  2018-02-01T19 10 04 00 00 Convert Feb 01 2018  extension Date       static func getFormattedDate string  String   formatter String  - gt  String          let dateFormatterGet   DateFormatter           dateFormatterGet dateFormat    yyyy-MM-dd T HH mm ssZ           let dateFormatterPrint   DateFormatter           dateFormatterPrint dateFormat    MMM dd yyyy           let date  Date    dateFormatterGet date from   2018-02-01T19 10 04 00 00           print  Date  dateFormatterPrint string from  date       Feb 01 2018         return dateFormatterPrint string from  date

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If you want to parse date from  1996-12-19T16 39 57-08 00   use the following format  yyyy-MM-dd T HH mm ssZZZZZ    let RFC3339DateFormatter   DateFormatter   RFC3339DateFormatter locale   Locale identifier   en US POSIX   RFC3339DateFormatter dateFormat    yyyy-MM-dd T HH mm ssZZZZZ  RFC3339DateFormatter timeZone   TimeZone secondsFromGMT  0      39 minutes and 57 seconds after the 16th hour of December 19th  1996 with an offset of -08 00 from UTC  Pacific Standard Time     let string    1996-12-19T16 39 57-08 00  let date   RFC3339DateFormatter date from  string    from Apple https   developer apple com documentation foundation dateformatter

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swift 3  let date   Date   Date   let dateFormatter   DateFormatter   dateFormatter dateFormat    MMM dd  yyyy  let todaysDate   dateFormatter string from  date

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You have to declare 2 different NSDateFormatters  the first to convert the string to a NSDate and the second to print the date in your format  Try this code   let dateFormatterGet   NSDateFormatter   dateFormatterGet dateFormat    yyyy-MM-dd HH mm ss   let dateFormatterPrint   NSDateFormatter   dateFormatterPrint dateFormat    MMM dd yyyy   let date  NSDate    dateFormatterGet dateFromString  2016-02-29 12 24 26   print dateFormatterPrint stringFromDate date      Swift 3 and higher   From Swift 3 NSDate class has been changed to Date and NSDateFormatter to DateFormatter   let dateFormatterGet   DateFormatter   dateFormatterGet dateFormat    yyyy-MM-dd HH mm ss   let dateFormatterPrint   DateFormatter   dateFormatterPrint dateFormat    MMM dd yyyy   if let date   dateFormatterGet date from   2016-02-29 12 24 26         print dateFormatterPrint string from  date     else      print  There was an error decoding the string

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I solved my problem to the format yyyy-MM-dd T HH mm ss SSS Z  e g 2018-06-15T00 00 00 000Z  with this   func formatDate date  String  - gt  String      let dateFormatterGet   DateFormatter      dateFormatterGet dateFormat    yyyy-MM-dd T HH mm ss SSS Z       let dateFormatter   DateFormatter      dateFormatter dateStyle    medium    dateFormatter timeStyle    none          dateFormatter locale   Locale identifier   en US     uncomment if you don t want to get the system default format      let dateObj  Date    dateFormatterGet date from  date      return dateFormatter string from  dateObj

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Swift 3 and higher let dateFormatter   DateFormatter   dateFormatter dateStyle    medium dateFormatter timeStyle    none dateFormatter locale   Locale current print dateFormatter string from  date      Jan 2  2001  This is also helpful when you want to localize your App  The Locale identifier    uses the ISO 639-1 Code  See also the Apple Documentation

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