data difference in `as.POSIXct` with Excel

Question

My actual data looks like:

8/8/2013 15:10
7/26/2013 10:30
7/11/2013 14:20
3/28/2013 16:15
3/18/2013 15:50

When I read this from the excel f

Answer 1

Maybe it is a matter of how R reads the data. Just an example here with lubridate seems to work well.

x <- "8/8/2013 15:10"
library(lubridate)
dmy_hm(x, tz = "GMT")
[1] "2013-08-08 15:10:00 GMT"