It would be very helpful if you could set the timezone rendering of a timestamp to a specific property of the object.
For example, if something happens at 1pm at a building in California and someone is talking to them from NYC, they should be able to communicate to the California person while looking at an the event occurring at 1pm PST (not 3pm EST or something in UTC time). They should be able to speak the same language about what occurred in the data. We can get around this by rendering timestamps as strings, for local time, but then we lose out on all of the components that support timestamps.