I was wondering how (if?) it would be possible to modify in the source code the dropdown list of time zones appearing in the web UI. Eastern Standard Time shows as a default when I set an appointment, but cannot be changed back to EST if I change it, say, to GMT. Furthermore, the list is, in my opinion, a little confusing, not being ordered alphabetically, and containing such items as Newfoundland and Greenland , but not New York, LA nor Paris, which would be quite useful for the company I work for.