Timestamp Issue

One of our Spark users is getting an incorrect timestamp. I’ve scoured Spark for a time setting but can’t find one so I assume it just uses system time, that’s how the one on mine and other user’s machiens work. However their timestamp is 7 hours ahead of their system time. I’ve tried restarting the system but that doesn’t do it. They are using Windows 7. Any suggestions where I can look for this?