korganizer 4:22.08.3-0ubuntu1 (arm64 binary) in ubuntu lunar

 This package contains KOrganizer, a calendar and scheduling program.
 .
 KOrganizer aims to be a complete program for organizing appointments,
 contacts, projects, etc. KOrganizer natively supports information interchange
 with other calendar applications, through the industry standard vCalendar
 personal data interchange file format. This eases the move from other
 modern PIMs to KOrganizer.