[R] Clean method to convert date and time between time zones keeping it in POSIXct format

[Arnaud Mosnier]

Dear UseRs,

I know two ways to convert dates and time from on time zone to another but
I am pretty sure that there is a better (cleaner) way to do that.


Here are the methods I know:


## The longest way ...

T1 <- as.POSIXct("2016-05-09 10:00:00", format="%Y-%m-%d %H:%M:%S",
tz="America/New_York")

print(T1)

T2 <- as.POSIXct(format(T1, tz="UTC"), tz="UTC") # format convert it to
character, so I have to convert it back to POSIXct afterward.

print(T2)



## The shortest but probably not the cleanest ...

attributes(T1)$tzone <- "UTC"

print(T1)

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