Closed Bug 1284507 Opened 8 years ago Closed 7 years ago

Azores wrong timezone (GMT+2300 instead of GMT-0100)

Categories

(Core :: JavaScript Engine, defect, P3)

Product:
Core
Component:
JavaScript Engine
Version:
49 Branch
Platform:
x86_64
Windows 8.1
Type:
defect

Tracking

()

Status:
RESOLVED FIXED

People

(Reporter: ivodaveiga, Unassigned)

References

Details

(Keywords: triage-deferred) 

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0
Build ID: 20160704004008

Steps to reproduce:

1. Set the system timezone to Azores (UTC-01:00)
2. Open the console and write: (new Date(2017,2,25,0,0,0)).toString();



Actual results:

"Sat Mar 25 2017 00:00:00 GMT+2300"


Expected results:

"Sat Mar 25 2017 00:00:00 GMT-0100"
Severity: normal → critical
At October 30, 23 hours are skiped instead of 1

>> (new Date(2016,9,30,0,0,0)).toString()
"Sun Oct 30 2016 00:00:00 GMT+0000"
>> (new Date(2016,9,30,23,0,0)).toString()
"Sun Oct 30 2016 00:00:00 GMT+0000"
OS: Unspecified → Windows 8.1
Hardware: Unspecified → x86_64
Also affects: Linux (Linux Mint 17.3 Rosa)

>> (new Date(2017,2,25,0,0,0)).toString();
"Sat Mar 25 2017 00:00:00 GMT+2300 (AZOT)"
Component: Untriaged → JavaScript Engine
Product: Firefox → Core
See Also: → 830304
Keywords: triage-deferred
Priority: -- → P3
Fixed in https://hg.mozilla.org/mozilla-central/rev/b7ef07909cc4


Before (Win10):
(new Date(2017,2,25,0,0,0)).toString()
"Sat Mar 25 2017 00:00:00 GMT+2300 (Azores Daylight Time)"
(new Date(2016,9,30,0,0,0)).toString()
"Sun Oct 30 2016 00:00:00 GMT+0000 (Azores Standard Time)"
(new Date(2016,9,30,23,0,0)).toString()
"Sun Oct 30 2016 00:00:00 GMT+0000 (Azores Standard Time)"

After (Win10):
(new Date(2017,2,25,0,0,0)).toString()
"Sat Mar 25 2017 00:00:00 GMT-0100 (Azores Standard Time)"
(new Date(2016,9,30,0,0,0)).toString()
"Sun Oct 30 2016 00:00:00 GMT+0000 (Azores Daylight Time)"
(new Date(2016,9,30,23,0,0)).toString()
"Sun Oct 30 2016 23:00:00 GMT-0100 (Azores Standard Time)"



Before (Ubuntu):
(new Date(2017,2,25,0,0,0)).toString()
"Sat Mar 25 2017 00:00:00 GMT+2300 (AZOT)"
(new Date(2016,9,30,0,0,0)).toString()
"Sun Oct 30 2016 00:00:00 GMT+0000 (AZOT)"
(new Date(2016,9,30,23,0,0)).toString()
"Sun Oct 30 2016 00:00:00 GMT+0000 (AZOT)"

After (Ubuntu):
(new Date(2017,2,25,0,0,0)).toString()
"Sat Mar 25 2017 00:00:00 GMT-0100 (AZOT)"
(new Date(2016,9,30,0,0,0)).toString()
"Sun Oct 30 2016 00:00:00 GMT+0000 (AZOST)"
(new Date(2016,9,30,23,0,0)).toString()
"Sun Oct 30 2016 23:00:00 GMT-0100 (AZOT)"
Status: UNCONFIRMED → RESOLVED
Closed: 7 years ago
Resolution: --- → FIXED
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