in HCL Notes 11 a new feature was introduced: 24+ hour meeting support
On the feature enhancement its described that the calendar entry appears in the header.
Please change the visual display to show the appointment like a regular appointment in the calendar.
An appointment lasts 25 hours from Saturday 09:00 am to Sunday 10:00 am.
The appointment should not only appear in the header on Saturday and Sunday but should be displayed in the calendar from Saturday 09.00 am to Sunday 10.00 am.
This simplifies the calendar planning and makes it easier for the user to see his free times at a glance.