Hello,

I would like to adapt the following code:

> data$datetime3<-format(data$datetime2, tz="EST")

for different time zones. For example, North America's CST and MDT (but
those codes don't work).

I have read ?Sys.timezone but I'm afraid it isn't very helpful. I'm just
looking for a list of the timezones, not a history of how time zones have
been dealt with throughout R's history. Previously asked messages (and
replies) on R-help provide confusing and sometimes contradictory advice.

Is there a simple list of timezones, for R on Windows? Or, can they be
calculated on the fly (but e.g., "GMT+6" does not work in the above code).

Any help would be much appreciated as I am getting a bit frustrated, thanks!

Mark Na

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