Time string writing extra zeroes to my text file

I am using the get time/data and format date/time string to write a running log of my while loop time while my program is running. The problem is the text file has the time  written in this format: 12:26:13 -0.000000, where did these zeroes come from and how do i remove them? If i hook up an indicator to the time strring output I do not see them only the time but there it is written once i open up the file.