Yep, thanks 
, I suspected as much.
In a more sophisticated script it would make sense, but here it doesn’t, if the script is automated and executed periodically one would use a variable for the file name to be able to “compose” it with the date taken from system time, i.e. something like this one:
http://forum.mikrotik.com/t/changing-the-mmm-dd-yyyy-date-format/5183/10