On this site we have information relevant to the celebration of Debian Day. This includes information about activities located at cities near you. If there is no information for your location, you are invited to create it.
The Debian Day http://www.debian.org/doc/manuals/project-history/ is celebrated on August 16 of each year.
DebianDayDebConf is also a day of activities open to anyone during the yearly Debian Conference, DebConf.
If you intend to create a page for your event, you could create page using debian wiki default template, following the DebianDayCountryYear convention for country and then creating city page following the convention DebianDayCountryYearStCity (St = State or Province, first letter Upper case, second lower case).
If your local group has own site, you could link the event to its external page from your country page listing its cities.
You may use each city page for directly coordinating texts and announcements.
To create pages for the events, follow the Debian wiki translation(s) guide. The master/default page should be always in english. Therefore, your translated page should use the suitable country language prefix. Example: "pt_BR/DebianDayBrasil2009RsPortoAlegre". If it is still the only one, without a master english page yet, link it anyway. Using the language prefix, you will not preclude future translations. When an english version of event page becomes available, edit the links at the master english pages.
Mailing List: use an existing debian-user-(language) or other existing regional local user group mailing list to coordinate the information regarding to your country event.
How to organize: you may find useful hints at DebianEventsHowto and DebianEventsFaqs .