This Cookbook shows, how you can use a special Date-Type as you like it. You can select a different "Date-Format" for every language for this Date-Type.

This Cookbook shows, how you can have some different Event-types in one Event-Calendar for Drupal 7 (http://drupal.org/node/1477602). The Event-calendar shows every user only the for his role(s) allowed Event-types. You can use this e.g. to differ in internal, administrative and public Events.

This Cookbook shows, how you can prepare an event-calendar for Drupal 7, using the new method to create new calendars from a template.