There are many calendars on the U.C. Berkeley campus that post events of interest to other departments or organizations. However, there is currently no automated way to share event information among these numerous calendars. Usually the process of cross-posting an event requires either manually copying the event information from one calendar and pasting it into the next, or sending an email to a calendar administrator. This is problematic in many ways. First the process of re-entering event information wastes time, is inherently error prone and creates a data maintenance nightmare. Second, replicating event information increases data storage costs, can compromise the general integrity and timeliness of event information, and can increase overall complexity. Finally, incompatible data models limit the amount and type of event information that can be repurposed. These issues hinder the creation and consumption of web-based event information on the Berkeley campus.