Duplicates in the timezone drop down

[Denis-de-Bernardy]

GMT = GTM0 = GTM+0 = GTM-0 = UTC = UCT = Universal = Greenwich = Zulu

Might not GMT be enough? :D

see also #9758 (found it while fixing that, and there's no point in patching before it's fixed)

was of course meant GMT = GMT0 = GMT+0 = GMT-0 = ...

some testing could be useful in case they're not available in all platforms. maybe setting some kind of variable ($did_gmt) would be the better way to work around this, rather than trying to spot which one is "best".

May UTC be used instead of GMT? UTC is a more official term.

actually, that's only true for the US. in the UK, they say UCT for the same thing...

UTC is the official term (​http://en.wikipedia.org/wiki/UTC#Abbreviation), and Windows 7 is using it instead of GMT.

As a crusty old telecom engineer who has implemented way too many ITU specs, I say let everyone use UTC. :-)

We already mention UTC in the timezone setup, let's stick with it. We can link to the wikipedia page from the UTC in the "UTC time is" text to introduce those who are unfamiliar.

+1 for GMT/UTC. GMT = UTC. the +/- thingy is for naming other timezones. +/-0 makes no sense then if you want to name GMT/UTC directly.

Personally I tend to say, GMT is more well known in the non-technical world, and UTC for the internet folks. Zulu for those who use it day by day while talking to each other: nautics, aviation and millitary.

Anyway, all three name the same, while GMT is then more British and UTC the international (pseudo) abbrevation. Zulu is more for speaking and less for writing/written language IMHO.

Which places are to patch?

Replying to hakre:

Which places are to patch?

It's a relatively straightforward one, in the wp_timezone_choice() function (wp-includes/functions.php)

Basically, if Continent == ETC, we'd want strip all dups for UTC.

(In [11434]) Standardize on UTC. Props Denis-de-Bernardy. fixes #9793

Shoudn't 'UCT' in the array not being 'UTC'? Typo?

UCT is correct. We want to exclude it and not UTC.