Date Format in Swift - ios

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)

Answer 1

This may be useful for who want to use dateformatter.dateformat;
if you want 12.09.18 you use dateformatter.dateformat = "dd.MM.yy"
Wednesday, Sep 12, 2018 --> EEEE, MMM d, yyyy
09/12/2018 --> MM/dd/yyyy
09-12-2018 14:11 --> MM-dd-yyyy HH:mm
Sep 12, 2:11 PM --> MMM d, h:mm a
September 2018 --> MMMM yyyy
Sep 12, 2018 --> MMM d, yyyy
Wed, 12 Sep 2018 14:11:54 +0000 --> E, d MMM yyyy HH:mm:ss Z
2018-09-12T14:11:54+0000 --> yyyy-MM-dd'T'HH:mm:ssZ
12.09.18 --> dd.MM.yy
10:41:02.112 --> HH:mm:ss.SSS
Here are alternatives:
Era: G (AD), GGGG (Anno Domini)
Year: y (2018), yy (18), yyyy (2018)
Month: M, MM, MMM, MMMM, MMMMM
Day of month: d, dd
Day name of week: E, EEEE, EEEEE, EEEEEE

Answer 2

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")
}

Answer 3

Swift - 5.0
let date = Date()
let format = date.getFormattedDate(format: "yyyy-MM-dd HH:mm:ss") // Set output format
extension Date {
func getFormattedDate(format: String) -> 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) -> 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!);
}
}

Answer 4

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

Answer 5

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

Answer 6

Convert #BatyrCan answer to Swift 5.3 with extra formats. Tested in Xcode 12.
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "HH:mm:ss"
var dateFromStr = dateFormatter.date(from: "12:16:45")!
dateFormatter.dateFormat = "hh:mm:ss a 'on' MMMM dd, yyyy"
//Output: 12:16:45 PM on January 01, 2000
dateFormatter.dateFormat = "E, d MMM yyyy HH:mm:ss Z"
//Output: Sat, 1 Jan 2000 12:16:45 +0600
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
//Output: 2000-01-01T12:16:45+0600
dateFormatter.dateFormat = "EEEE, MMM d, yyyy"
//Output: Saturday, Jan 1, 2000
dateFormatter.dateFormat = "MM-dd-yyyy HH:mm"
//Output: 01-01-2000 12:16
dateFormatter.dateFormat = "MMM d, h:mm a"
//Output: Jan 1, 12:16 PM
dateFormatter.dateFormat = "HH:mm:ss.SSS"
//Output: 12:16:45.000
dateFormatter.dateFormat = "MMM d, yyyy"
//Output: Jan 1, 2000
dateFormatter.dateFormat = "MM/dd/yyyy"
//Output: 01/01/2000
dateFormatter.dateFormat = "hh:mm:ss a"
//Output: 12:16:45 PM
dateFormatter.dateFormat = "MMMM yyyy"
//Output: January 2000
dateFormatter.dateFormat = "dd.MM.yy"
//Output: 01.01.00
//Customisable AP/PM symbols
dateFormatter.amSymbol = "am"
dateFormatter.pmSymbol = "Pm"
dateFormatter.dateFormat = "a"
//Output: Pm
// Usage
var timeFromDate = dateFormatter.string(from: dateFromStr)
print(timeFromDate)

Answer 7

swift 3
let date : Date = Date()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MMM dd, yyyy"
let todaysDate = dateFormatter.string(from: date)

Answer 8

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) -> 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!)
}

Answer 9

iOS 15.0+
iPadOS 15.0+,
macOS 12.0+,
Mac Catalyst 15.0+,
tvOS 15.0+,
watchOS 8.0+,
Xcode 13.0+
Use formatted(date:time:)
let now = Date.now
let date = now.formatted(date: .abbreviated, time: .omitted)
Instead of .abbreviated, you may use another DateStyle such as .long, .numeric or define a custom format.
SwiftUI
Text(myDate, format: Date.FormatStyle(date: .numeric, time: .omitted))
or simply use:
Text(myDate, style: .date)
Reference
formatted(date:time:)
init(_:format:)
Text.DateStyle

Answer 10

Swift 4, 4.2 and 5
func getFormattedDate(date: Date, format: String) -> String {
let dateformat = DateFormatter()
dateformat.dateFormat = format
return dateformat.string(from: date)
}
let formatingDate = getFormattedDate(date: Date(), format: "dd-MMM-yyyy")
print(formatingDate)

Answer 11

Swift Version: 5.6 + Above
DateFormatter’s dateFormatter property is used to format Date with a custom String Pattern.
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MMM dd, yyyy"
let date = dateFormatter.string(from: datePicker.date)
print(date)
//Feb 28, 2022
If you want anything that shouldn’t be formatted and printed, then use single quotes around that word. Like; ‘at’
dateFormatter.dateFormat = "MMM dd, yyyy 'at' hh:MM a"
// May 29, 2022 at 12:05 PM
These are all possible Patterns to Format Date, Time & Time Zone.

Answer 12

Swift 3 with a Date extension
extension Date {
func string(with format: String) -> 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")

Answer 13

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

Answer 14

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()

Answer 15

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("===========>",date!)
}

Answer 16

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) -> 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
}

Answer 17

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"

Answer 18

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) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = dateFormat
return dateFormatter.string(from: date)
}

Answer 19

Place it in extension and call it like below. It's easy to use throughout the application.
self.getFormattedDate(strDate: "20-March-2019", currentFomat: "dd-MMM-yyyy", expectedFromat: "yyyy-MM-dd")
Implementation
func getFormattedDate(strDate: String , currentFomat:String, expectedFromat: String) -> String{
let dateFormatterGet = DateFormatter()
dateFormatterGet.dateFormat = currentFomat
let date : Date = dateFormatterGet.date(from: strDate) ?? Date()
dateFormatterGet.dateFormat = expectedFromat
return dateFormatterGet.string(from: date)
}

Answer 20

From iOS 15 use something like this:
extension Date {
var string: String {
if #available(iOS 15.0, *) {
return self.formatted(date: .complete, time: .complete)
} else {
return self.description
}
}
}

Answer 21

Here is a full date format extension for swift
extension Date {
func getFormattedDate(format: String) -> String {
let dateformat = DateFormatter()
dateformat.dateFormat = format
return dateformat.string(from: self)
}
func getFormattedDate(style: DateFormatter.Style) -> String {
let dateformat = DateFormatter()
dateformat.dateStyle = style
return dateformat.string(from: self)
}
}
Usage
myDate.getFormattedDate(style: .medium) //medium, short, full, long
OR
myDate.getFormattedDate(format: "yyyy/MM/dd HH:mm:ss")

Answer 22

swift 3
func dataFormat(dataJ: Double) -> 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"
}

Answer 23

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) -> 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 > \(dateString)")
// print
// dateString > 2020-04-30 15:15:21

Answer 24

class Utils {
class func dateFormatter(_ date: Date, _ format: String) -> String {
let dateformat = DateFormatter()
dateformat.dateFormat = format
return dateformat.string(from: date)
}
}
print(Utils.dateFormatter(Date(), "EEEE, MMM d, yyyy"))
Create class name Utils import same function and you can use globally accesss any where with your date and formate