Read date/time in an sqlite data base file

[ssimop]

I read in an sqlite data base file the supposed to be a filetime-type field, the string : "2459067.10928241". I am in need of any advice on how to covert it into to two parts, namely date (dd-mm-yyyy) and time (hh:mms:...). Methods already used in QM do not work in this case. Is it likely that I need any other functions? Many thanks in advance.