How to convert DateTime into different timezones?

Question

How to convert DateTime into different timezones? The DateTime class has two methods .toLocal() and .toUtc(). But if I want to display time in another time zone. How can I do it?

Answer 1

DateTime doesn't contain timezone information therefore you can't create a DateTime in a specific timezone only the timezone of your system and UTC are available.

You can wrap the DateTime in a custom class and add timezone information to the wrapper. You also need a table of offsets for each timezone and then add/substract the offset from the UTC date.

Answer 2

I wrote a package for this. It's called Instant, and it can convert a DateTime in any given timezone worldwide. Take a detailed look at https://aditya-kishore.gitbook.io/instant/

The basic usage for converting a DateTime to a timezone is very simple:

//Assumes Instant is in your pubspec
import 'package:instant/instant.dart';

//Super Simple!
DateTime myDT = DateTime.now(); //Current DateTime
DateTime EastCoast = dateTimeToZone(zone: "EST", datetime: myDT); //DateTime in EST zone
return EastCoast;

This works with one line of code and minimal hassle.