How to get current timezone region (tz database name) in Flutter

I am new to flutter and my rest api takes current timezone as Europe/london. I don't know to get current timezone in flutter. There is a question in stackoverflow about this topic but no user gave the answer.

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Can anyone guide me, how can i get the current timezone in flutter using dart.

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with

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might work for you.

You can always make native functionality available to Flutter by building an

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is also somewhat related.

There is a great library for this:

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`DateTime` is the default class give use timezone and time offset both required to solve timezone related issue.

DateTime dateTime = DateTime.now();
print(dateTime.timeZoneName);
print(dateTime.timeZoneOffset);

**Output:**

**1. India**

timeZoneName: IST
timeZoneOffset: 5:30:00.000000

**2. America/Los_Angeles**


timeZoneName: PST
timeZoneOffset: -8:00:00.000000


timezone list:

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Maybe useful for someone, I'm using:

String formatDateToStringWithTimeZone(DateTime date) {
var dur = date.timeZoneOffset;
if (dur.isNegative)
return "${DateFormat("y-MM-ddTHH:mm:ss").format(date)}-${dur.inHours.toString().padLeft(2, '0')}:${(dur.inMinutes - (dur.inHours * 60)).toString().padLeft(2, '0')}";
else
return "${DateFormat("y-MM-ddTHH:mm:ss").format(date)}+${dur.inHours.toString().padLeft(2, '0')}:${(dur.inMinutes - (dur.inHours * 60)).toString().padLeft(2, '0')}";
}

> /// The time zone name. /// /// This value is provided by the
> operating system and may be an /// abbreviation or a full name.
> /// /// In the browser or on Unix-like systems commonly returns
> abbreviations, /// such as "CET" or "CEST". On Windows returns the
> full name, for example /// "Pacific Standard Time".
`external String get timeZoneName;`
>
> /// The time zone offset, which /// is the difference between
> local time and UTC. /// /// The offset is positive for time zones
> east of UTC. /// /// Note, that JavaScript, Python and C return
> the difference between UTC and /// local time. Java, C# and Ruby
> return the difference between local time and /// UTC.
`external Duration get timeZoneOffset;`

`DateTime.now().timeZoneName`

If time instance is in UTC.

`timeInstance.toLocal().timeZoneName`


Moreover,

> /// The DateTime class does not provide internationalization. /// To
> internationalize your code, use /// the
> [intl](

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) package.

OR

To get timezone in `Europe/Moscow` format:
From [here][1]: Using [flutter_native_timezone](

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)

final String currentTimeZone = await FlutterNativeTimezone.getLocalTimezone();
print(currentTimeZone); // Europe/Moscow


[1]:

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var date = DateTime.now().toIso8601String().split(".")[0];
if(DateTime.now().timeZoneOffset.isNegative){
date += "-";
} else {
date += "+";
}
final timeZoneSplit = DateTime.now().timeZoneOffset.toString().split(":");

var hour = int.parse(timeZoneSplit[0]);
if(hour < 10){
date += "0${timeZoneSplit[0]}";
}
date += ":" + timeZoneSplit[1];
print(date);

This will work and this will give something like `2021-07-15T19:28:25+05:30`. Here 5:30 is IST. Which should be good.

import 'package:intl/intl.dart';

DateTime startDate = DateTime.now().toLocal();
var date = DateFormat.yMMMd().format(startDate);

Dart does not provide a tz timezone for the platform directly, however one can use the following two properties and a mapping to determine the tz timezone.

---

(1) The `DateTime.now().timeZoneName` property gives a timezone abbreviation (on Windows it gives a full name). This abbreviation alone is not enough to determine a time zone. For example, CST can mean Central Standard Time, Cuba Standard Time, China Standard Time, etc.

(2) The `DateTime.now().timeZoneOffset` property gives a UTC offset, which vertical spans multiple timezones. This alone is not enough to determine a timezone.

---

To determine the tz timezone, use both the `DateTime.now().timeZoneName` and `DateTime.now().timeZoneOffset` properties, and map to the appropriate tz timezone.

Example below (which could be created as a Flutter package):

```dart
String timeZone = DateTime.now().timeZoneName.toString();
String timeZoneOffset = DateTime.now().timeZoneOffset.toString();

String tzTimeZoneName = '';
String timeZoneName = '';

if (
(timeZone == 'CST' || timeZone == 'CST ( Central Standard Time )') &&
timeZoneOffset == '-6:00:00.00-0.0'
) {
tzTimeZoneName = 'America/Chicago';
timeZoneName = 'Central Standard Time';
}
```

These two pages can be used to create a full mapping:

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> **Note:** This mapping technique can also be used to convert the timezone abbreviation into the full name timezone (on non-Window systems). For example CST, to "Central Standard Time". I also think the Dart team, could have patched this on non-Window systems, as they have both the timezone abbreviation and the UTC offset. 🤷🏻‍♂️

// Use this

Map timezoneNames = {
0: 'UTC',
10800000: 'Indian/Mayotte',
3600000: 'Europe/London',
7200000: 'Europe/Zurich',
-32400000: 'Pacific/Gambier',
-28800000: 'US/Alaska',
-14400000: 'US/Eastern',
-10800000: 'Canada/Atlantic',
-18000000: 'US/Central',
-21600000: 'US/Mountain',
-25200000: 'US/Pacific',
-7200000: 'Atlantic/South_Georgia',
-9000000: 'Canada/Newfoundland',
39600000: 'Pacific/Pohnpei',
25200000: 'Indian/Christmas',
36000000: 'Pacific/Saipan',
18000000: 'Indian/Maldives',
46800000: 'Pacific/Tongatapu',
21600000: 'Indian/Chagos',
43200000: 'Pacific/Wallis',
14400000: 'Indian/Reunion',
28800000: 'Australia/Perth',
32400000: 'Pacific/Palau',
19800000: 'Asia/Kolkata',
16200000: 'Asia/Kabul',
20700000: 'Asia/Kathmandu',
23400000: 'Indian/Cocos',
12600000: 'Asia/Tehran',
-3600000: 'Atlantic/Cape_Verde',
37800000: 'Australia/Broken_Hill',
34200000: 'Australia/Darwin',
31500000: 'Australia/Eucla',
49500000: 'Pacific/Chatham',
-36000000: 'US/Hawaii',
50400000: 'Pacific/Kiritimati',
-34200000: 'Pacific/Marquesas',
-39600000: 'Pacific/Pago_Pago'
};

data[DateTime.now().timeZoneOffset.inMilliseconds] // Ex : Indian/Mayotte