Binary package “xcal” in ubuntu disco

a graphical calendar with memos and reminder alarms

 The "classic" calendar app with memos and alarms, xcal normally
 sits idle and displays the date. When clicked on, pops up a `strip'
 for this month. Clicking on a day allows you to enter details.
 Automatically parses times entered, and reminds you 5 minutes
 before your appointment.
 Supports daily and weekly repeating events and context-sensitive help.