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I am trying to convert salesforce standard field CreatedDate to logged-in user's timezone. I am using following code

Datetime dt = Datetime.newInstance(a.CreatedDate.dateGmt(),a.CreatedDate.timeGmt());

But this is not giving right result. for e.g. I have created a record at 11/12/2012 12:50 PM (in GMT+5:30). Now when another user (in GMT-5:00) logs into the system and run the above code in developer console then he should see 11/12/2012 2:20 AM but he sees 11/12/2012 5:50 AM.

What I am doing wrong? Any Thoughts?

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For the method you're using, the documentation says the returned date is in the GMT Timezone.

This should do it

Datetime GMTDate = Datetime.newInstanceGmt(2011,6,1,12,1,5);
String strConvertedDate = GMTDate.format('MM/dd/yyyy HH:mm:ss', 'America/New_York');
// Date is converted to the new time zone and is adjusted for daylight saving time. 

System.assertEquals('06/01/2011 08:01:05', strConvertedDate);

You can get the User's Timezinesidkey via a query to use dynamically per user

[select timezonesidkey from user]
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  • I tried Datetime dt = Datetime.newInstanceGMT(a.CreatedDate.dateGmt(),a.CreatedDate.timeGmt()); But this is also not working. – doga Nov 12 '12 at 8:18
  • And you invoked format on it as above? With the appropriate Timezone string? – techtrekker Nov 12 '12 at 8:22
  • No, actually my users can be in different timezones and formatting I want according to locale. Actually this final date I want to render using JavaScript. I want to make it general. – doga Nov 12 '12 at 8:28
  • You can use select timezonesidkey from user where id=:UserInfo.getUserId() – techtrekker Nov 12 '12 at 8:50
  • Since I am using Javascript to render to datetime field. So I want to just pass datetime field in current logged-in user's timezone. Fomrat method will return string and that will not of any use. – doga Nov 12 '12 at 9:04

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