[R] Bug in as.POSIXct regarding AM/PM

[Ted Zeng (曾振兴)]

Dear All,

I encounted in a problem with as.POSIXct() function.

> as.POSIXct("2009/03/26 01:00:00 AM" , format="%Y/%m/%d %I:%M:%S %p") 
[1] NA
> as.POSIXct("2009/03/26 02:00:00 PM" , format="%Y/%m/%d %I:%M:%S %p")
[1] NA

I have tried this in the R version 2.11.1,  R version 2.10.1  and R version
2.9.2 . They all does not work. The operation system is win7. 

Thanks

Ted
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