Convert String DateTime to User local DateTime

Question

I need to convert the string datetime into user locale date time format.

for Ex:

//Consider this is Indian Time 22nd Dec 5 PM
String dateTime = '12-22-2016 17:00:00'; 

I want to convert this as per user locale. For ex, if the user is in United States, then I need to show the locale time as per the above given string datetime like below,

String dateTime = '12-22-2016 17:00:00';

then, If I need to show for America/los_angels timezone user locale,

//which is locale time for above datetime
datetimefield__c convertedDate = 12/22/2016 3:30 AM 

Answer 1

You can use DateTime methods to convert the time to user's Timezone.

String strDt = DateTime.now().format('MM/dd/yyyy HH:mm:ss', 'America/Los_Angels');

Answer 2

1. Convert IST into GMT(offset +5.5hours)

   • since IST = GMT+5.5hours, so GMT = IST - 5.5hours
   • DateTime convertedGMT = ISTDtTime.addseconds(-5.5*60*60);
   • where ISTDtTime- Indian Date time

2. Find the locale Datetime using:

   String strConvertedDate = convertedGMT.format('MM/dd/yyyy HH:mm:ss','America/New_York'); 
   

Answer 3

In addition to the aforementioned answers, if you want to store the date on your object in a specific timezone for some reason, or if you don't want to convert the date to a different locale using Apex and this value will be used in a Lightning component, you can use the localization service method in Javascript to convert the string to the right localized date based on the users location service as seen by the browser. In your Lighting Javascript controller, create a method that does the following (along with whatever else you need it to do)...

//Passed date variable from Apex to Lightning Controller
var passedDateString = component.get("v.myPassedDateString");
//Use localizationService method to format and localize the date to the users browser setting
localizedDateString = $A.localizationService.formatDate(passedDateString, "YYYY MM DD");
//Set the string back to attribute for display
component.set("v.myLocalizedDateString", localizedDateString);