Install konsolekalendar by entering the following commands in the terminal:
sudo apt update sudo apt install konsolekalendar
Description:
konsole personal organizer
KonsoleKalendar is a command-line interface to KDE calendars. KonsoleKalendar complements KOrganizer by providing a console frontend to manage your calendars.
Homepage: http://pim.kde.org/
Version: 4:17.12.3-0ubuntu1
Section: universe/kde