Convert date string swift

Question

I have a date string in this format:

2016-06-20T13:01:46.457+02:00

and I need to change it to something like this:

20/06/2016

Previously I have always used this library -> SwiftDate to manipulate the dates, but it doesn't work now.

I tried also something like:

let myDate = self.dateNoteDict[indexPath.row]!
    let dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss.SSSSxxx"
    let date = dateFormatter.dateFromString(myDate)
    print("date -> \(date)")

but it doesn't work. How can I do?

Thanks in advance.

The date format "yyyy-MM-dd hh:mm:ss.SSSSxxx" doesn't match the format of the string 2016-06-20T13:01:46.457+02:00. For instance, where is the "T" in the date format? — Larme
– Larme, Commented Jun 20, 2016 at 13:11
You have to put your string in one line, and the format under it on the second line, and try to 'match' the format. For instance, the "hh" is for 12h format, but the string seems to handle 24h format, so "HH" instead, etc. Try this one: yyyy-MM-dd'T'HH:mm:ssZ — Larme
– Larme, Commented Jun 20, 2016 at 13:15

vadian · Accepted Answer · 2019-01-12 10:46:18Z

31

The standard ISO8601 date format with fractional seconds and time zone is

yyyy-MM-dd'T'HH:mm:ss.SSSZ

let myDate = "2016-06-20T13:01:46.457+02:00"
let dateFormatter = NSDateFormatter()
dateFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX") // edited
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = dateFormatter.dateFromString(myDate)!
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.stringFromDate(date)

Swift 3:

let myDate = "2016-06-20T13:01:46.457+02:00"
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX") // edited
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = dateFormatter.date(from:myDate)!
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:date)

In macOS 10.13+, iOS 11+ ISO8601DateFormatter is an alternative as input formatter

let myDate = "2016-06-20T13:01:46.457+02:00"
let inputFormatter = ISO8601DateFormatter()
inputFormatter.formatOptions = [.withFullDate, .withFullTime, .withFractionalSeconds]
let date = dateFormatter.date(from:myDate)!
let outputFormatter = DateFormatter()
outputFormatter.locale = Locale(identifier: "en_US_POSIX")
outputFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:date)

edited Jan 12, 2019 at 10:46

answered Jun 20, 2016 at 13:18

vadian

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7 Comments

Jigen Over a year ago

It works. Thanks for help and for the explanation. +1

tmuecksch Over a year ago

NSDateFormatter() is deprecated since Swift 3

Samarth Kejriwal Over a year ago

This conversion gives me the date in UTC, i want to convert it into my local date

Leo Dabus Over a year ago

For fixed date formats you need to set the date formatter locale to "en_US_POSIX"

Leo Dabus Over a year ago

If you're working with fixed-format dates, first set the locale of the date formatter to something appropriate for your fixed format. In most cases the best locale to choose is en_US_POSIX, a locale that's specifically designed to yield US English results regardless of both user and system preferences. en_US_POSIX is also invariant in time (if the US, at some point in the future, changes the way it formats dates, en_US will change to reflect the new behavior, but en_US_POSIX will not), and between platforms (works the same on iPhone OS as it does on OS X, and as it does on other platforms)

|

Sudipto Roy · Accepted Answer · 2017-05-10 06:38:45Z

4

I always use this code while converting String to Date . (Swift 3)

extension String
{
     func  toDate( dateFormat format  : String) -> Date
    {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = format
        if let date = dateFormatter.date(from: self)
        {
            return date
        }
        print("Invalid arguments ! Returning Current Date . ")
        return Date()
    }
}

and just call like . .

print ( "2016-06-20T13:01:46.457+02:00".toDate(dateFormat: "yyyy-MM-dd'T'HH:mm:ss.SSSZ") )
//Capital HH for 24-Hour Time

edited May 10, 2017 at 6:38

answered May 10, 2017 at 6:18

Sudipto Roy

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1 Comment

Leo Dabus Over a year ago

This will actually return now as a Date in case the date string parsing fails. You should change the return type to optional and return nil in case of failure.

Prakhar Prakash Bhardwaj · Accepted Answer · 2019-02-22 08:23:09Z

1

I always use this code while converting String to Date. (Swift 4.2)

    let myDate = datePicker.date
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
    let date = myDate
    dateFormatter.dateFormat = "dd/MM/yyyy"
    let dateString = dateFormatter.string(from:date)
    print(dateString)

You can try manually also:

    let myDate = "2019-02-22T08:21:11+0000"
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
    let date = myDate
    dateFormatter.dateFormat = "dd/MM/yyyy"
    let dateString = dateFormatter.string(from:date)
    print(dateString)

answered Feb 22, 2019 at 8:23

Prakhar Prakash Bhardwaj

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