Web/JavaScript/Reference/Global objects/Intl/DateTimeFormat

The Intl.DateTimeFormat object is a constructor for objects that enable language-sensitive date and time formatting.

Constructor

Intl.DateTimeFormat(): Creates a new DateTimeFormat object.

Static methods

Intl.DateTimeFormat.supportedLocalesOf(): Returns an array containing those of the provided locales that are supported without having to fall back to the runtime's default locale.

Instance methods

Intl.DateTimeFormat.prototype.format(): Getter function that formats a date according to the locale and formatting options of this DateTimeFormat object.
Intl.DateTimeFormat.prototype.formatToParts(): Returns an Array of objects representing the date string in parts that can be used for custom locale-aware formatting.
Intl.DateTimeFormat.prototype.resolvedOptions(): Returns a new object with properties reflecting the locale and formatting options computed during initialization of the object.
Intl.DateTimeFormat.prototype.formatRange(): This method receives two Dates and formats the date range in the most concise way based on the locale and options provided when instantiating DateTimeFormat.
Intl.DateTimeFormat.prototype.formatRangeToParts(): This method receives two Dates and returns an Array of objects containing the locale-specific tokens representing each part of the formatted date range.

Examples

Using DateTimeFormat

In basic use without specifying a locale, DateTimeFormat uses the default locale and default options.

var date = new Date(Date.UTC(2012, 11, 20, 3, 0, 0));

// toLocaleString without arguments depends on the implementation,
// the default locale, and the default time zone
console.log(new Intl.DateTimeFormat().format(date));
// → "12/19/2012" if run with en-US locale (language) and time zone America/Los_Angeles (UTC-0800)

Using locales

This example shows some of the variations in localized date and time formats. In order to get the format of the language used in the user interface of your application, make sure to specify that language (and possibly some fallback languages) using the locales argument:

var date = new Date(Date.UTC(2012, 11, 20, 3, 0, 0));

// Results below use the time zone of America/Los_Angeles (UTC-0800, Pacific Standard Time)

// US English uses month-day-year order
console.log(new Intl.DateTimeFormat('en-US').format(date));
// → "12/19/2012"

// British English uses day-month-year order
console.log(new Intl.DateTimeFormat('en-GB').format(date));
// → "19/12/2012"

// Korean uses year-month-day order
console.log(new Intl.DateTimeFormat('ko-KR').format(date));
// → "2012. 12. 19."

// Arabic in most Arabic speaking countries uses real Arabic digits
console.log(new Intl.DateTimeFormat('ar-EG').format(date));
// → "١٩‏/١٢‏/٢٠١٢"

// for Japanese, applications may want to use the Japanese calendar,
// where 2012 was the year 24 of the Heisei era
console.log(new Intl.DateTimeFormat('ja-JP-u-ca-japanese').format(date));
// → "24/12/19"

// when requesting a language that may not be supported, such as
// Balinese, include a fallback language, in this case Indonesian
console.log(new Intl.DateTimeFormat(['ban', 'id']).format(date));
// → "19/12/2012"

Using options

The date and time formats can be customized using the options argument:

var date = new Date(Date.UTC(2012, 11, 20, 3, 0, 0, 200));

// request a weekday along with a long date
var options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };
console.log(new Intl.DateTimeFormat('de-DE', options).format(date));
// → "Donnerstag, 20. Dezember 2012"

// an application may want to use UTC and make that visible
options.timeZone = 'UTC';
options.timeZoneName = 'short';
console.log(new Intl.DateTimeFormat('en-US', options).format(date));
// → "Thursday, December 20, 2012, GMT"

// sometimes you want to be more precise
options = {
  hour: 'numeric', minute: 'numeric', second: 'numeric', 
  timeZone: 'Australia/Sydney',
  timeZoneName: 'short'
};
console.log(new Intl.DateTimeFormat('en-AU', options).format(date));
// → "2:00:00 pm AEDT"

// sometimes you want to be very precise 
options.fractionalSecondDigits = 3; //number digits for fraction-of-seconds
console.log(new Intl.DateTimeFormat('en-AU', options).format(date));
// → "2:00:00.200 pm AEDT"


// sometimes even the US needs 24-hour time
options = {
  year: 'numeric', month: 'numeric', day: 'numeric',
  hour: 'numeric', minute: 'numeric', second: 'numeric',
  hour12: false,
  timeZone: 'America/Los_Angeles' 
};
console.log(new Intl.DateTimeFormat('en-US', options).format(date));
// → "12/19/2012, 19:00:00"


// to specify options but use the browser's default locale, use 'default'
console.log(new Intl.DateTimeFormat('default', options).format(date));
// → "12/19/2012, 19:00:00"

// sometimes it's helpful to include the period of the day
options = {hour: "numeric", dayPeriod: "short"};
console.log(new Intl.DateTimeFormat('en-US', options).format(date));
// → 10 at night

The used calendar and numbering formats can also be set independently via options arguments:

var options = {calendar: 'chinese', numberingSystem: 'arab'};
var dateFormat = new Intl.DateTimeFormat('default', options);
var usedOptions = dateFormat.resolvedOptions();

console.log(usedOptions.calendar);
// → "chinese"

console.log(usedOptions.numberingSystem);
// → "arab"

console.log(usedOptions.timeZone);
// → "America/New_York" (the users default timezone)

Polyfill

formatjs Intl.DateTimeFormat polyfill

Specifications

Specification
ECMAScript Internationalization API (ECMA-402)The definition of 'Intl.DateTimeFormat' in that specification.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
`DateTimeFormat`	Chrome Full support 24	Edge Full support 12	Firefox Full support 29	IE Full support 11	Opera Full support 15	Safari Full support 10	WebView Android Full support 4.4	Chrome Android Full support 25	Firefox Android Full support 56	Opera Android Full support 14	Safari iOS Full support 10	Samsung Internet Android Full support 1.5	nodejs Full support 0.12 Notes' Full support 0.12 Notes' Notes' Before version 13.0.0, only the locale data for `en-US` is available by default. See the `DateTimeFormat()` constructor for more details.
`DateTimeFormat()` constructor	Chrome Full support 24	Edge Full support 12	Firefox Full support 29	IE Full support 11	Opera Full support 15	Safari Full support 10	WebView Android Full support 4.4	Chrome Android Full support 25	Firefox Android Full support 56	Opera Android Full support 14	Safari iOS Full support 10	Samsung Internet Android Full support 1.5	nodejs Full support 13.0.0 Full support 13.0.0 Partial support 0.12 Notes' Notes' Before version 13.0.0, only the locale data for `en-US` is available by default. When other locales are specified, the `DateTimeFormat` instance silently falls back to `en-US`. To make full ICU (locale) data available for versions prior to 13, see Node.js documentation on the `--with-intl` option and how to provide the data.
`format`	Chrome Full support 24	Edge Full support 12	Firefox Full support 29	IE Full support 11	Opera Full support 15	Safari Full support 10	WebView Android Full support 4.4	Chrome Android Full support 25	Firefox Android Full support 56	Opera Android Full support 14	Safari iOS Full support 10	Samsung Internet Android Full support 1.5	nodejs Full support 0.12 Notes' Full support 0.12 Notes' Notes' Before version 13.0.0, only the locale data for `en-US` is available by default. See the `DateTimeFormat()` constructor for more details.
`formatRange`	Chrome Full support 76	Edge No support No	Firefox No support No	IE No support No	Opera No support No	Safari No support No	WebView Android Full support 76	Chrome Android Full support 76	Firefox Android No support No	Opera Android Full support 54	Safari iOS No support No	Samsung Internet Android No support No	nodejs Full support 12.9.0 Notes' Full support 12.9.0 Notes' Notes' Before version 13.0.0, only the locale data for `en-US` is available by default. See the `DateTimeFormat()` constructor for more details.
`formatRangeToParts`	Chrome Full support 76	Edge No support No	Firefox No support No	IE No support No	Opera No support No	Safari No support No	WebView Android Full support 76	Chrome Android Full support 76	Firefox Android No support No	Opera Android Full support 54	Safari iOS No support No	Samsung Internet Android No support No	nodejs Full support 12.9.0 Notes' Full support 12.9.0 Notes' Notes' Before version 13.0.0, only the locale data for `en-US` is available by default. See the `DateTimeFormat()` constructor for more details.
`formatToParts`	Chrome Full support 57 Notes' Full support 57 Notes' Notes' Before version 71, `formatToParts()` returned an object with an incorrectly cased type key of `dayperiod`. Version 71 and later use the specification defined `dayPeriod`. See Chromium bug 865351.	Edge Full support 18	Firefox Full support 51	IE No support No	Opera Full support 44 Notes' Full support 44 Notes' Notes' Before version 58, `formatToParts()` returned an object with an incorrectly cased type key of `dayperiod`. Version 58 and later use the specification defined `dayPeriod`. See Chromium bug 865351.	Safari Full support 11	WebView Android Full support 57 Notes' Full support 57 Notes' Notes' Before version 71, `formatToParts()` returned an object with an incorrectly cased type key of `dayperiod`. Version 71 and later use the specification defined `dayPeriod`. See Chromium bug 865351.	Chrome Android Full support 57 Notes' Full support 57 Notes' Notes' Before version 71, `formatToParts()` returned an object with an incorrectly cased type key of `dayperiod`. Version 71 and later use the specification defined `dayPeriod`. See Chromium bug 865351.	Firefox Android Full support 56	Opera Android Full support 43 Notes' Full support 43 Notes' Notes' Before version 50, `formatToParts()` returned an object with an incorrectly cased type key of `dayperiod`. Version 50 and later use the specification defined `dayPeriod`. See Chromium bug 865351.	Safari iOS Full support 11	Samsung Internet Android Full support 7.0 Notes' Full support 7.0 Notes' Notes' Before version 71, `formatToParts()` returned an object with an incorrectly cased type key of `dayperiod`. Version 71 and later use the specification defined `dayPeriod`. See Chromium bug 865351.	nodejs Full support 8.0.0 Notes' Full support 8.0.0 Notes' Notes' Before version 12.0.0, `formatToParts()` returned an object with an incorrectly cased type key of `dayperiod`. Version 12.0.0 and later use the specification defined `dayPeriod`. See Chromium bug 865351. Notes' Before version 13.0.0, only the locale data for `en-US` is available by default. See the `DateTimeFormat()` constructor for more details.
`resolvedOptions`	Chrome Full support 24	Edge Full support 12	Firefox Full support 29	IE Full support 11	Opera Full support 15	Safari Full support 10	WebView Android Full support 4.4	Chrome Android Full support 25	Firefox Android Full support 56	Opera Android Full support 14	Safari iOS Full support 10	Samsung Internet Android Full support 1.5	nodejs Full support 0.12 Notes' Full support 0.12 Notes' Notes' Before version 13.0.0, only the locale data for `en-US` is available by default. See the `DateTimeFormat()` constructor for more details.
`supportedLocalesOf`	Chrome Full support 24	Edge Full support 12	Firefox Full support 29	IE Full support 11	Opera Full support 15	Safari Full support 10	WebView Android Full support 4.4	Chrome Android Full support 25	Firefox Android Full support 56	Opera Android Full support 14	Safari iOS Full support 10	Samsung Internet Android Full support 1.5	nodejs Full support 13.0.0 Full support 13.0.0 Partial support 0.12 Notes' Notes' Before version 13.0.0, only the locale data for `en-US` is available by default. To make full ICU (locale) data available for versions prior to 13, see Node.js documentation on the `--with-intl` option and how to provide the data.

Legend

Full support: Full support
No support: No support
See implementation notes.': See implementation notes.