[R] Different time between date() and Sys.date()

[David Winsemius]

On Oct 21, 2010, at 6:19 AM, omerle wrote:

> Hi,
>
> I got two different times between these functions :
>> date()
> [1] "Thu Oct 21 12:11:37 2010"
>> Sys.time()
> [1] "2010-10-21 10:11:40 GMT"
>>
>
> I know that its because I did Sys.setenv(TZ="GMT"). Even if my  
> system is set by default at CEST.
> I think that the difference between date() and Sys.time() is equal  
> to the difference between CEST and GMT.
> I would like to get the time of my machine even if I set GMT as a  
> time zone with the Sys.time() function.
> How can I get the real time from the Sys.time() function ?
> Or I can really set my time zone to GMT to get the real time with  
> Sys.time() ?

 > Sys.time()
[1] "2010-10-21 09:04:40 EDT"
 > as.POSIXlt(Sys.time(), tz="GMT")
[1] "2010-10-21 13:06:40 GMT"

>
> Thanks,
>
> Olivier Merle
>
> Une messagerie gratuite, garantie à vie et des services en plus, ça  
> vous tente ?
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>
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David Winsemius, MD
West Hartford, CT