Maintaining file creation dates while zipping and unzipping in SAS

[Walternate]

I'm looking for one process to zip and one to unzip files using SAS programming. The trick is that I need to maintain the original file creation date for each file that is zipped/unzipped (ie, not the date of zipping/unzipping). 

I have tried ODS PACKAGE and FILENAME ZIP, but neither of these maintained the file date (although maybe there is some sort of special way to set it up that would allow me to do so). 

Any help is much appreciated.

Thanks!

[Kurt_Bremser]

Proper tools like gzip do that. Use them. You'll save lots of effort wasted while reinventing the wheel.

[Reeza]

If you have x command enabled, use gzip/7zip/winzip via command line to get dates. I thought that the file dates would be honoured with filename zip as long as you're not unzipping them.

If you explain the use case (accessing latest files) there may be another option.