A user creates appointments by selecting dates on a displayed calendar. A pattern may be automatically detected in response to the user selecting calendar dates on the calendar. For example, a pattern may automatically be detected when a user selects two Mondays in a row when selecting appointment dates. In response to automatically detecting a pattern, a list of recurring appointments is automatically created. The automatically created appointments may be shown on the calendar. The automatically created appointments may also be shown in a list of an appointment user interface. A user may interact with the appointments in the appointment user interface. For example, a user may select one of the displayed appointments from the list and change appointment information related to the selected appointment. A start date and an end date may also be specified using the appointment user interface.