Using time zone UTC-5 (or GMT-5, or EST5)

[Bill Davidsen]

I am getting some data on mountable media, and the device which writes the files 
runs in EST or whatever you want to call five hours west of Greenwich with no 
daylight time. The problem is that on a FAT or ISO-9660 filesystem, the date and 
time seem to all jump an hour during daylight time. Is there a better way to get 
the time correct than to run a separate system which doesn't use daylight savings?

I have tried exporting TZ=EST5 (or EST or UTC-5 or GMT-5) to the mount command 
or the rsync command, that doesn't seem to help anything, I need the incoming 
data treated as EST, while the machine is at EST5EDT.