R on Windows uses the Olsen timezone database, a copy of which is stored with R
in the Program Files directory (e.g. R/R-3.1.1/share/zoneinfo). You could
update the file yourself if you can find a corrected version, or download an
updated version of R.
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Sent from my phone. Please excuse my brevity.
On November 6, 2014 1:16:06 PM EST, Vasantha Kumar Kesavan
<info.vas...@gmail.com> wrote:
>Hi,
>
>I am working R on windows 2012 R2 platform, I have updated the latest
>hotfixes for time zone information(Microsoft KB 2981580.
><http://support.microsoft.com/kb/2981580>).
>
>But still R is not populating correct date time values(Standard and
>Daylight saving).
>
>Could you please advise me, how to enable R to pick up the latest time
>zone
>information/configurations.
>
>Example:
>
>R --vanilla
>Sys.setenv(TZ = "America/Eirunepe");
>dt<-c(seq(as.POSIXct("2013-11-09 20:00:00",tz="America/Eirunepe"),
>as.POSIXct("2013-11-10 10:00:00" ,tz="America/Eirunepe"), by="hour"));
>> dt
> [1] "2013-11-09 20:00:00 AMT" "2013-11-09 21:00:00 AMT"
> [3] "2013-11-09 22:00:00 AMT" "2013-11-09 23:00:00 AMT"
> [5] "2013-11-10 00:00:00 AMT" "2013-11-10 01:00:00 AMT"
> [7] "2013-11-10 02:00:00 AMT" "2013-11-10 03:00:00 AMT"
> [9] "2013-11-10 04:00:00 AMT" "2013-11-10 05:00:00 AMT"
>[11] "2013-11-10 06:00:00 AMT" "2013-11-10 07:00:00 AMT"
>[13] "2013-11-10 08:00:00 AMT" "2013-11-10 09:00:00 AMT"
>[15] "2013-11-10 10:00:00 AMT"
>
>For the “*America/Eirunepe*” time zone, the DST ended on Sun
>10-Nov-2013 at
>12:00:00 A.M. when local clocks were set backward 1 hour.
>
>
>as per the latest timezone configuration, the date time sequence should
>have "2013-11-09 23:00:00" twice.
>
>
>Thanks
>
>Vasanth
>
> [[alternative HTML version deleted]]
>
>______________________________________________
>R-help@r-project.org mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.
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