iOS EventKit: EKCalendar named “Calendar”? What is

Question

When I query the EKCalendars on my iPad via -[EKEventStore calendars], an EKCalendar called "Calendar" is always returned. It has a type of "Local" and never has any events. (Note: the same calendar is also returned via the iOS Simulator on the desktop.)

The Calendar app on my iPad doesn't list this calendar. Should my app? Or should I exclude it from display, like Calendar app?

Thanks.