[tz] Timezone in Brazil

Matt Johnson mj1856 at hotmail.com
Fri Oct 9 23:26:19 UTC 2015

TZDB doesn't track display names.  This is the realm of CLDR.
The choice of your Android example to show the TZDB identifier directly is a function of that particular example. I'm not sure if you mean the Android OS, or an app running on Android, but either way it wouldn't matter.  If it wanted to show something other than America/Sao_Paulo to the end user, it should get that information from a localization data resource - which is what CLDR is all about.http://cldr.unicode.org/
There are reasons for why the zones are named as they are.  You may wish to read:http://www.iana.org/time-zones/repository/tz-link.htmlhttps://github.com/eggert/tz/blob/master/Theory#L47-L167https://en.wikipedia.org/wiki/Tz_database#Names_of_time_zones
If you search the tz list archive, you'll see this has been discussed many times in the past also:https://www.google.com/#q=site:http:%2F%2Fmm.icann.org%2Fpipermail%2Ftz%2F+brasilia

From: marcio.ikeda at lge.com
To: mj1856 at hotmail.com; silverpie2 at mac.com
CC: tz at iana.org
Date: Fri, 9 Oct 2015 16:05:25 -0400
Subject: RE: [tz] Timezone in Brazil

Guys, Thank you for clarifications. Let me try to exemplify the problem. It is strange that in Brazil we have 4 major timezone areas: Fernando de Noronha (GMT -2) -> America/NoronhaBrasilia (GMT -3) -> America/Sao_PauloAmazonas (GMT -4) -> America/ManausAcre (GMT -5) -> America/Rio_Branco Manaus is capital of AmazonasRio Branco is capital of AcreBrasilia is capital of Brazil and in state of GoiasFernando de Noronha is an island People in Brazil, call it as “Horario de Brasilia”  as the main timezone. In Windows it displays Brasilia for user.In iOS has the Brasilia entry as well.In Android (my interested area) the timezone list uses Exemplar location, so “Sao Paulo” is shown. I don`t know how other systems manages timezones. But it is sure that there is some mismatching. What do you guys think ?An entry like America/Brasilia, mapping to America/Sao_Paulo and changing displayName would be the solution ? Thanks in advance. Marcio Ikeda From: Matt Johnson [mailto:mj1856 at hotmail.com] 
Sent: sexta-feira, 9 de outubro de 2015 16:43
To: J Andrew Lipscomb; MARCIO IKEDA/LGESP R&D GSM SW(marcio.ikeda at lge.com)
Cc: tz at iana.org
Subject: RE: [tz] Timezone in Brazil Hi Marcio! "Metazone" is a CLDR term. See:http://www.unicode.org/reports/tr35/tr35-dates.html#Metazone_Nameshttp://unicode.org/repos/cldr/trunk/common/supplemental/metaZones.xml CLDR depends on TZDB, but not vice-versa. You may also be interested in:https://en.wikipedia.org/wiki/Time_in_Brazil  Cheers!-MattFrom: silverpie2 at mac.com
Date: Fri, 9 Oct 2015 15:04:54 -0400
To: marcio.ikeda at lge.com
CC: tz at iana.org
Subject: Re: [tz] Timezone in BrazilThis is one of the most common questions we get. Being the capital is not meaningful--it's the largest city in the zone that names it. Thus, Brasilia would be in the São Paulo (or Rio de Janeiro)  zone. (Similarly, Washington DC is in the New York zone, and Ottawa in the Toronto zone.)

Envoyé de mon iPad
Le 8 oct. 2015 à 17:21, MARCIO IKEDA <marcio.ikeda at lge.com> a écrit :This is Marcio Ikeda from LG Electronics in Brazil. Nice to meet you! I would like to know if there are some background history for timezones in Brazil.It seems that Brasilia city which is the capital, is only treated as a metaZone and not a timeZone.I would like to know if are there some discussions on why America/Brasilia is not in the list.And if It is possible to include it. This is causing people from QA here to question this.Thank you! Marcio IkedaSoftware Engineer | UIFW – LGESP SCA R&D LabOffice: + 55 11 2202 5339Mobile:+ 55 11 9 9966 6457E-mail: marcio.ikeda at lge.com <image001.jpg> LG ELECTRONICS DO BRASILAv. Dr. Chucri Zaidan, 1170 – 10º andar – CEP 04583-110 – São Paulo/SPwww.lge.com/br         <image002.jpg>  		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mm.icann.org/pipermail/tz/attachments/20151009/85adde11/attachment.htm>

More information about the tz mailing list