1023512 - Date object is displaying the wrong timezone

Status: RESOLVED DUPLICATE of bug 879261

(Core :: JavaScript Engine, defect)

Description

[zevvy2]

User Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0 (Beta/Release)
Build ID: 20140506152807

Steps to reproduce:

create a new Date object



Actual results:

the GMT is listed as GMT-0500 (Eastern Standard Time)
the GMT is listed as GMT-0400 (Eastern Daylight Time)


Expected results:

the GMT is listed as GMT-0500 (Eastern Daylight Time)
the GMT is listed as GMT-0400 (Eastern Standard Time)

Comment 1

[Kohei Yoshino [:kohei]]

Testcase please?

(new Date()).toString() returns "Wed Jun 11 2014 01:07:31 GMT-0400 (EDT)" for me.

Comment 2

[Kohei Yoshino [:kohei]]

(new Date()).toLocaleString('en-US', { timeZoneName: 'long' }) returns "6/11/2014, 1:14:37 AM Eastern Daylight Time".

And actually this is correct:

> Actual results:
> 
> the GMT is listed as GMT-0500 (Eastern Standard Time)
> the GMT is listed as GMT-0400 (Eastern Daylight Time)

EST is -5, EDT is -4. That's my timezone in Toronto.

Comment 3

[zevvy2]

When I send the date to the back end and when I log new Date() to the console in firebug this is what I get: 
Date {Wed Jun 11 2014 08:41:13 GMT-0400 (Eastern Standard Time)}.

In chrome and IE, when I log new Date(), I get this: 
Wed Jun 11 2014 09:12:23 GMT-0400 (Eastern Daylight Time)

I am using Firefox 29.0.1.

Comment 4

[Kohei Yoshino [:kohei]]

What the built-in console of Firefox says? Any sample code?

Comment 5

[zevvy2]

Attachment: console log for firebug

Comment 6

[zevvy2]

please see the following as well - 
https://bugzilla.mozilla.org/show_bug.cgi?id=912710

http://stackoverflow.com/questions/16903678/javascript-seems-to-be-using-time-zones-backwards-with-firefox

Comment 7

[zevvy2]

Attachment: console log for chrome

Comment 8

[Gingerbread Man]

This is Windows-specific.
Bug 879261, comment 1.
Bug 879261, comment 9.