
I want to compare two tables, but the format on the time stamps are
different. Both had the same format in Excel, but when I read those into R,
the times have changed in the following way: 
00:00 = 0:00, that is, the smallest dataset has the original time stamp, the
largest has a new format. The two dataset are pretty big, about 65 000 rows
on the smallest and 350 000 rows in the largest... So changing them manually
is not an option. 

They are read in the same, so I don't understand how one of them changes the
format on one column.

Hist <- read.xls(HistFil, perl = perl, header = FALSE, colClasses = c(
rep("character", 7)))
Ra <- read.xls(RaFil, perl = perl, header = TRUE, colClasses =
c(rep("character", 6)))


 		 	   		  
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