Abstract
A calendar system displays event data via an electronic calendar form that is accessible over a network by a user of a client computer. The system stores event data for multiple events and selectively displays event data based on whether a calendar access request is received from a guest user or an authenticated user. The system displays event data via a default calendar to guest users and displays event data via a customized calendar to authenticated users. The default calendar displays event data for related events based on a contextual relationship that is derived by examining event data for each the multiple events to determine a position separation and/or a frequency of a user supplied keyword in the event data. The customized calendar displays events based on contextual relationships and based on the viewing history of the user and other input data from user.