I have certainly read the doc before I asked.

But I guess it doesnt do what I want and I should have made myself clear...
sorry for that:

I created someintraday  timeseries with notime zone initially.

And then we would like to treat the time series as GMT and convert all the
timestamps into EST/EDT, taking into account of daylight saving stuff.

And then we will do some subsetting and get a new time series.

And the we will remove the time zone attributes and from then on treat the
series as under GMT.

I have played with indexTZ yesterday but couldnt find a way to physically
change the time stamps to the correct one - the index should be adjusted by
-5hours in winters and -4hours in summers... but my index just didnot
change at all...

What could be the problem? There must be some tricks I didnt know... Please
shed lights on me Thanks a lot!
On Jan 30, 2012 11:01 AM, "Jeffrey Ryan" <jeffrey.ryan@lemnica.com> wrote:

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