[R] How to change time zones?

[Gabor Grothendieck]

POSIX objects are UTC internally but can be displayed
with respect to other time zones.

By the way, do you really need time zones in the first
place?  Read R News 4/1 help desk article which will
help you determine which date/time class is
suitable for your application and also has a table
of idioms and other discussion which may be helpful.

On 3/7/06, Jason Horn <jhorn at bu.edu> wrote:
> Say you have a POSIX object that is in UTC.   How do you change the
> values to another timezone?
>
> If I do this:
>
> times <- strptime(times, "%H:%M:%S")
> times1 <- as.POSIXct(times, tz="UTC")
> times2 <- as.POSIXct(times, tz="CDT6CST")
>
> times1 id UTC, but times2 is still UTC, not CTD.  Why? Is the only
> was to change time zones to add seconds to POSIX objects?
>
>
>
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