I've never tried to do ths from QV, but if you could send the appopriate LS command to the FTP site, you may be able to get the directory listing into a temporory text file. Exactly how would depend on what FTP client you use, but assuming you have one (or can find one) that will allow batch commands, you could execute this in a command shell bat file and then load the resulting text file to get the file date.
But a better way would be to see if the person generating the file can embed the date stamp in the file name and then attempt to load the appropriate date stamped file name. Or include a field in the file with the file create time.
Logic will get you from a to b. Imagination will take you everywhere. - A Einstein