[R] bug in difftime with as.POSIXct

[Gabor Grothendieck]

Read relevant article in R News 4/1.

On Jan 27, 2008 2:20 PM, Dan Kelley <Dan.Kelley at dal.ca> wrote:
>
> Oh, I'm sorry to be posting a reply to my own stupid question, but the
> problem is that I had not specified GMT, and so it was using local time,
> which changes to 'save daylight".  This is demonstrated below:
>
> > unclass(as.POSIXct("1975-04-27",tz="GMT"))[1]-unclass(as.POSIXct("1975-04-28",tz="GMT"))[1]
> [1] -86400
> > unclass(as.POSIXct("1975-04-27"))[1]-unclass(as.POSIXct("1975-04-28"))[1]
> [1] -82800
>
> --
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>
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>
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