Time Zone setup

Is it possible to set up a server in such a way that each user could have a different view of the system time? I'm imagining a system with its system hardware clock set to UTC, and users with shell accounts all over the world. Could each user have their own timezone value, so that times displayed by applications running under their shell would be in their own local time? So that their e-mail would be timestamped from their own timezone? I don't see anything obvious, like a timezone field with /etc/passwd. How would I go about implementing it in Linux? -- Rick Green "I have the heart of a little child, and the brain of a genius. ... and I keep them in a jar under my bed"