Wrong tz name in IE 11 Pacific/Kwajalein

[artemijan]

moment.tz.guess() in IE 11 returns "Pacific/Kwajalein" if i switched to tz -12 (windows 7). But it's UTC+12

[mattjohnsonpint]

So what is happening here is that UTC-12 is not currently in use by any populated location on Earth. We have been excluding non-populated zones from the guessing algorithm.

Pacific/Kwajalein is on UTC+12 now, but it used to be on UTC-12. It jumped sides of the IDL in August 1993. Since prior-year offsets are in the guessing algorithm, and no other populated location was ranked higher, it chose that zone.

Including zero-population zones in the guessing algorithm will fix this, as current-year offset carries a higher rank in the algorithm than population.

[artemijan]

I guess that in chrome it works because of Intl impl has timezone and IE doesn't?

[mattjohnsonpint]

Right. Most browsers have the Intl time zone support now. So the guessing algorithm doesn't kick in.

(expand the DateTimeFormat section on that chart)

[isHanz89]

Hi Matt,

I having the same issue here. My local computer time zone is set to Kuala Lumpur/Singapore.
When I use IE, it will show Asia/Manila and if I use Chrome, it work fine.

Is there any work around for it?

Thanks,