Like most (all?) desktops, elementary OS has a date & time widget. You click it and it shows calendar stuff. Mine currently looks like this: The elementary OS date widget, showing the month and two events for the day(The world clocks are not standard; that’s something else I’m working on, but I’ll write about that some other time). It gets its data from the Evolution Data Server, the backend store for the Evolution groupware client (and others stuff). This thing has a bunch of backends ...
