479027 - Firefox returns incorrect Date object for some system timezones

Status: RESOLVED DUPLICATE of bug 411726

(Core :: DOM: Core & HTML, defect)

Description

[Omar Kilani]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_6; en-us) AppleWebKit/525.27.1 (KHTML, like Gecko) Version/3.2.1 Safari/525.27.1
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-GB; rv:1.9.0.6) Gecko/2009011912 Firefox/3.0.6

Under the following timezones (selected from the Date & Time OS X pref pane):

Caracas - Venezuela

Colombo - Sri Lanka

Firefox creates a Date object that is one day ahead of what it should be.

Reproducible: Always

Steps to Reproduce:
1. Set system timezone to 'Caracas - Venezuela' or 'Colombo - Sri Lanka'.
2. Create a new Date object in Firefox (new Date()).
Actual Results:  
For 'Caracas - Venezuela':

Thu Feb 19 2009 07:07:07 GMT+1930 (WILDABBR)

For 'Colombo - Sri Lanka':

Thu Feb 19 2009 17:05:10 GMT+2930 (IST)


Expected Results:  
For 'Caracas - Venezuela':

Wed Feb 18 2009 07:07:07 GMT-0430 (from Opera 10.0)

For 'Colombo - Sri Lanka':

Wed Feb 18 2009 17:05:10 GMT+0530 (from Opera 10.0)

These tests were conducted under Mac OS X 10.5.6 with all updates applied.

The date is shown correctly in the system time display and through invocation of the 'date' program in a shell.

The problem also occurs under Safari 3.2.1 (5525.27.1).

The problem does not occur under Opera 10 on OS X.

Comment 1

[zug_treno]

(Partial) duplicate of bug 411726?

Comment 2

[Wayne Mery (:wsmwk)]

(In reply to zug_treno from comment #1)
> (Partial) duplicate of bug 411726?

you would think