You can see timestamps in all the reported bugs on your Dashboard. Shake adapts to you so the time you see is always shown in time zone you are in.
Let's take a look at an example:
A user is in San Francisco and reports the bug at 1:29 PM, their time. You're in New York so that's 4:29 PM your time. The bug immediately arrives to your Dashboard and the timestamp is set to your time zone - 4:29 PM.