Information management systems with time zone information, including event scheduling processes are disclosed. One aspect of the invention is directed toward a computer-implemented scheduling method that can include identifying a difference between a participant time zone and a user time zone, reviewing availability information for the participant and/or one or more selected time preference periods for the participant, and selecting a time range for an event. The method can further include reviewing one or more selected time preference periods for the user. Another aspect of the invention is directed toward a computer-implemented method for associating time zone information with a contact in an information management program application that includes selecting a contact, analyzing contact information associated with the contact, and determining a time zone for the contact based on the analysis of the contact information.