[R] Time OffSet From GMT - Losing it

rivercode
2010-10-08T19:43:45Z

Losing time offset from GMT:

> sTime = as.POSIXct(paste("2008-03-03","09:30:01"),
origin="1970-01-01")
> sTime
[1] "2008-03-03 09:30:01 EST"  <---- 9.31am EST

> sTime
[1] 1204554601

> t = as.numeric(sTime)


> as.POSIXct(t, origin="1970-01-01")
[1] "2008-03-03 14:30:01 EST"  <----- no tz option and t is sTime +
5 hours
ahead (assume because  I am in EST)

> as.numeric(as.POSIXct(t, origin="1970-01-01"))
[1] 1204572601  <-----  value of t is sTime +5 hours

> as.POSIXct(t, origin="1970-01-01", tz="GMT")
[1] "2008-03-03 14:30:01 GMT"   <--- time has not changed even
though I used
tz=?GMT?

> as.numeric(as.POSIXct(t, origin="1970-01-01",
tz="GMT"))
[1] 1204554601 <----- value is still sTime +5 hours though I am using GMT

I am in New York so am on EST time.

Missing the obvious...but what is it ?

Thanks,
Chris

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