Incorrect timezone in Firefox, compared to Safari, using javascript Date()

Question

The following code

var date = new Date();
console.log( date );

gives me

Sun Mar 06 2011 21:41:36 GMT+1300 (NZST) {}

in Firefox, but

Sun Mar 06 2011 21:40:51 GMT+1300 (NZDT)

in Safari (which is correct).

My system Date & Time is set to NZDT, so I'm wondering where firefox is getting its NZST from. Mind you, the UTC offset (+1300) is correct in both cases.

How can I get Firefox displaying the correct timezone: NZDT?

This bug seems to have been fixed in Firefox 4; I get the incorrect timezone in 3.6, but not in 4.0 beta 12. — 一二三, Mar 06 '11 at 09:26
You should really be using jquery are you wouldn't get this error — Phil C, Mar 12 '11 at 16:04
@Carnotaurus: I do use jQuery, but not for dates. How would using it stop this error? — meriial, Mar 22 '11 at 03:44

score 1 · Answer 1 · answered Mar 25 '11 at 03:02

You shouldn't rely on that output as it's different in other browsers (IE), instead you should use the getTimezoneOffset method.

var date = new Date;
console.log( date.getTimezoneOffset() );

The offset will change with day light savings but there are ways to work with this.

score 0 · Accepted Answer · answered Aug 31 '12 at 04:10

0

This was a bug that was fixed in Firefox v4 and later.

answered Aug 31 '12 at 04:10

meriial

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I'm rephrasing another comment in the form of a correct answer. – meriial Aug 31 '12 at 04:11

score 0 · Answer 3 · answered Mar 20 '11 at 18:28

0

If everything is how you want it except for the "NZST", you could just do a simple text replace:

console.log(date.toString().replace('NZST', 'NZDT'));

Note that this is really only simple fix for the display issue, it doesn't address the underlying cause.

answered Mar 20 '11 at 18:28

monsur

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And it would be incorrect during the time of year when New Zealand is actually on NZST. – Wayne Mar 20 '11 at 19:52

Incorrect timezone in Firefox, compared to Safari, using javascript Date()

3 Answers3

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